A pair of Amazona vittata. the puertorican amazon calling from a tree near their nest

It has been an unusually rainy 24 of February.  Normally this month is one of the driest ones of the year.  But the arrival of a cold front ushered non stop rain and drizzle that has lasted the whole day.  In some parts of the island the rain has set records that had stood since the 1940's.  It has been a rainy and cloudy afternoon.  Every afternoon, I do a round to check the captive breeding pairs.  I do this every day during the breeding season, at a specific time.  The captive parrots become habituated to my presence and are not alarmed when I go by.   Some wild birds have territories inside the aviary and they also become habituated to my presence.   This pair is perching in a tree near to where their nest is located.  You can hear their calls and also the calls of other parrots who are near.  Their calls serve to mark their territory and to warn other birds away.   There was another pair who had a territory close to that of this pair.  The male of that pair died.  In an unusual turn of events, this pair tolerates the female in their territory rather than chasing her away as they do with other birds.  You can see the widowed female arrive after second 18 of the video.  The male is a captive bird that was released a few years back, you can see the antena of his radio transmitter.  The is lacking a few feathers from the top of his head, probably he lost them in a territorial fight.

A puertorican parrot displaying to others of its flock.

Sometimes the puertorican parrots will open partially open their wings when they are displaying to other birds.  My guess is that they do so to make themselves look bigger.  This wing opening is often accompanied with bowing, and a side to side motion.  This particular bird was displaying in front of two other birds who were licking the sap that oozed from a broken banana leave.

When resting among the foliage, the green color of the puerto rican parrot, Amazona vittata, serves as a great camouflage

The puerto rican parrot is one of the Amazons with the the least color aside from green.  When resting or hiding among the vegetation it is very hard to see.  These two parrots were photographed just after sun down.  As you can see by the retracted foot inside the plumage of the left parrots, it is quite at home and relaxed in the tree stump.  The left parrot vocalizing loudly, something they do at sundown and at sunrise.  The bird to the left has a radio transmitter.

Male Puerto Rican parrot displaying to two apparently indifferent females

In the Rio Abajo forest in Arecibo I was able to observe a male Puerto Rican parrot cupping his wings and moving his body from side to side on a bare branch a few feet from two females.  The male is making himself seem larger and he is moving in a way that presumably is particularly sensual and attractive.  The two females were liking the sap that was oozing from the raquis of a banana leaf.  The females had broken the raquis to gain access to the sap.  It seems the dance was a success, eventually the male left and the females followed him.

En el bosque de Rio Abajo, Arecibo, pude observar un macho de cotorra de Puerto Rico abriendo parcialmente sus alas y moviendo su cuerpo de lado a lado en una rama a algunos pies de dos hembras.  El macho esta haciendo su cuerpo mas grande y moviéndose en lo que presumimos que es una forma especialmente sensual y atractiva.  Las dos hembras, se encontraban lamiendo la savia que manaba del raquis de una hoja de guineo que habían partido adrede para tener acceso a la savia.  Al parecer la danza fue exitosa, cuando el macho se fue, las hembras lo siguieron.

Late on a clear afternoon of the dry season, a trio Puerto Rican parrots rest on the vegetation. Rio Abajo State forest.

The largest flock I have seen to date of Puerto Rican parrots (Amazona vittata) in the Rio Abajo forest.

Since the first releases of the Puerto Rican parrot in the Rio Abajo forest, it has become almost commonplace to see, in certain parts of the forest, small flocks foraging or roosting.  These flocks can vary in size, but in my experience, 20 to 30 birds together has been the upper range for these groups.  Sometimes I walk in the forest to enjoy the clear afternoons that follow the thunderstorms of that start after noon and to see if I can catch a glimpse of the wild birds. 

Seeing PR parrots fly over the forest, during these walks, is always an inspiring sight.   Today, as I was walking around the forest just before nightfall I saw a flock sitting on a leafless tree.  The moment I saw the group of birds I was thrilled.  It was clear this was a very large group for the species.   From the photos I took I can count 45 birds on the tree.   I took several photos but since light was falling quickly and the birds kept moving, this one probably has the most birds together.   In my knowledge this is the largest flock ever documented on a photo.

I could not help but recall an article that I read many years ago, in which the authors said “…we personally doubt the current population exceeds 50 individuals and may even be much smaller.  We predict that Puerto Rico is about to lose another of its native birds.”¹  I am happy to say that thank to the work of many, many highly dedicated people, this is one prophecy that didn’t come to pass.   Of course our work is not done yet, but as this photo attest, we are on our way.

Recher Harry F, and  Recher, Judy T.  1996.  A contribution to the knowledge of the avifauna of the Sierra de Luquillo, Puerto Rico.  Caribbean Journal of Science.  Sept-Dec. 1966

Puerto Rican parrots, Amazona vittata, in captivity feeding on Sierra palm (Prestoea montana) fruits.

Brian Ramos, Piel Jonas Banchs, Ana Estrella, Jong Piel Banchs

Planting sierra palm

Although the diet the parrots receive in captivity is designed to furnish all their nutritional needs, from time to time we add seeds, fruits and leaves gathered from the forest to the parrot's food.  These foods collected from the wild fulfill an important role in the wellbeing of the parrots in captivity. 

Wild collected fruits, seeds, and leaves play a role as environmental enrichment for the birds in captivity, as they offer the opportunity to manipulate and feed on food that is different in size, shape and texture from the standard captive pellet diet.   Because we put the whole inflorescence with the fruits inside the cage, the birds get to interact with the food in a way that is similar with what would happen in the wild.  In simpler terms, environmental enrichment is a way of saying these food help relieve the boredom of the parrots.

Puerto Rican parrots relish eating the fruits of various species of palms.  Although sierra palm is a favorite, they also eat royal palm (Roystonea borinquena) and corozo palm (Attalea aculeata).  In the El Yunque forest the puerto rican parrots favor the sierra palm to the point that it is said that its breeding season is influenced by the availability of sierra palm seeds. 

The staff of the Puerto Rican parrot project collects these wild fruits from the forest around the aviary.  This means that when the birds are released they are quite familiar with the foods available in the forest.  In the Rio Abajo forest, sierra palm Prestonea montana is an uncommon plant we don’t feed the birds with them frequently.  In place of sierra palm we feed the birds royal palm fruits.

Aside from caring for the birds in captivity and monitoring the birds in the wild, the puerto rican parrot project staff works in a variety of endeavors of which the general public is generally not aware, one of these is improving the habitat by planting a variety of trees the parrot use as food. In the past decade the aviary staff has planted, among others, hundreds of seedlings of sierra palm, corozo palm and even the endemic manaca palms (Calyptronomas rivalis), in the aviary and nearby areas.

A Puerto Rican parrot, Amazona vittata, feeding on the fruit of the guava tree Psidium guajava

Those that keep Amazons in captivity are quite familiar with the messy feeding habits of these birds.  It is not rare for an Amazon to take a tiny bite of a piece of fruit and then drop the rest on the floor of the cage.    The birds behave the same way in the wild.  However sometimes, if the mood strikes them, these birds will take a piece of food and manipulate it with surprising delicacy and dexterity.

Some years ago I was able to photograph a Puerto Rican parrot in the wild eating a fruit from a guava tree Psidium guajaba.  Holding the fruit firmly with one leg, the parrot first cut a groove around the middle of the fruit to expose the pulp.  Then it proceeded to consume the fruit slowly and deliberately.  After it had finished the top half it ate the bottom half.   The fact that nothing disturbed this bird during its feeding bout is probably the reason that it ate almost all the fruit.  Birds that feel even slightly alarmed will immediately drop any food they are eating.

Wlid guava Psidium guajava, is a common tree in the Rio Abajo forest, particularly in disturbed areas.  When the local trees are fruiting, the Rio Abajo staff sometimes collects the fruit and gives it to the captive birds.  The captive birds not only relish the fruits but will also eat the leaves and sometimes will also strip the bark of branches after all the fruits and leaves have been eaten.

Some comments on the changes in brightness of certain colors of the tail feathers of the Puerto Rican parrot as you look at them from different perspectives.

top view

Reverse view

Side angle view

front angle view

Of all the species in the psittacine genus Amazona, the puertorican parrot, Amazona vittata is the least colorful.¹  Aside from a limited amount of red in the forehead, and the white skin patches around the eye, the rest of the body is covered with green feathers.  On a perching PR parrot there is little color besides green to be seen, the turquoise and black of the wings, the blue, red and yellow areas on the tail are all kept well hidden.  The reason for such lack of color is probably the need to be as cryptic as possible to avoid attracting the attention of predators.

The PR parrot brightest colors are in the forehead and in the tail feathers.   The red band in the forehead varies widely in width, length and shape.  Generally males have a wider red band than females, but not always.  Perhaps the best example of the variability of the forehead color in the species is the pair of PR parrots currently on exhibition on the Juan A. Rivero Zoo at Mayaguez. The male has a single tiny red feather in his forehead, the female has a red band wider and larger than almost all females, so one on first sight could easily be fooled into thinking she is the male and vise versa.

Very few people are familiar with the color in the tail feathers of the PR parrots.  The reason is that because they can only be sighted when the parrots fan their tails, a normally brief occurrence, they are essentially invisible to the casual observer.     But even if an observer happened to be at the right place and time to see a bird with its tail fanned, from a distance the colors are barely visible and unremarkable when compared even with even modestly colorful species, such as the hispaniolan amazon (Amazona ventralis).

In the aviary the birds interact in many ways during the day.  Some of these interactions involve body language, on occasions this includes tail fanning which is normally accompanied by vocalizations and sometimes bowing and wing cupping.   The birds can do these displays as parts of being aggressive and also for other reasons which are not necessarily so easy to discern.   Except when we are selecting breeding pairs from the flock, or are concerned about a bird being bullied, we don’t pay much attention to these displays. 

About a decade ago, when I was standing next to her breeding cage, a female known as Ann, did a bowing and tail fanning display standing in front of me on the wire floor of the cage,  very close to my face, this is, to this day, an uncommon event (by the way, Ann and her mate, Pepe, used to be among the tamest and sweetest birds in the aviary, but as they grew older they became more and more intolerant of people around their breeding cage, now as they are getting close to the two decade mark in their lives, when breeding, they are hideously aggressive and among the most fierce of our pairs, but I digress).

When this event happened, it was morning and sunlight was coming from my back and hitting the parrot head on.  When Ann did her display, for a brief moment, her green color became brighter the way a mirror becomes brighter when the sun hits it at just the right angle.  I was intrigued by this but given that I had many other concerns at the time, filed it in the back of my mind for future reference.  Early this year I found some a shed tail feather and decided to photograph it to record how light reflected from it.

The feathers that are the last ones at the sides of the tail are different from the other tail feather and any other feather.  They are asymmetrical and one of their sides is blue.  I found that the blue of these feathers changes in brightness and you look at it from different perspectives.  If you look at the feather from an angle of 90 degrees from top looking down at the top side, the color is not particularly bright.  But as one changes the perspective, the blue becomes brighter and brighter as one approaches the horizontal plane.  If one looks at the feather in the orientation that it would have if a parrot was displaying standing in front of you the blue becomes almost mirror-like in its brightness.  You can see how the blue changes in the photos.  

What is the meaning of this change of color?  The birds have a different color perception system than us, with four receptor cell types.   Personally, I don’t know how the eyes the parrot’s perceives the changes in color that my mammal brain reports to me.   My own guess would be that if the feathers undergo changes in color and brightness as a result of the birds fanning and bowing, it may be that those changes play a role in courting displays, alternatively it also could be important in aggressive interactions.   It has been shown that budgerigar females favor males whose face feathers display fluorescence.²   For the moment, from a strictly scientific point of view, I can’t say with any certainty what the brightness changes means for the parrots.   For all I know it could be an artifact of perspective or of my own perception.   Nevertheless I find it an intriguing phenomenon. I don’t foresee the program exploring this matter as we have worked hard to keep our birds from getting imprinted with humans and breeding pairs are not fond of either people or photographic cameras.

¹Low, R. 1984. Endangered parrots

²Proc Biol Sci. 2001 Nov 7;268(1482):2273-9.

Ultraviolet vision, fluorescence and mate choice in a parrot, the budgerigar Melopsittacus undulatus.

Puertorican parrots eating west indian tree fern stems

The Puerto Rican parrot (Amazona vittata) is known to eat the leaves, fruits or seeds of more than forty species of plants.  In the Rio Abajo forest the parrots sometimes consume the stems of the fronds of the tree ferns of the genus Cyathea.   The effect of the parrots’ activity is to completely defoliate the ferns.  The parrots consume all stems, from very young ones that are starting to unfurl to the oldest ones.    The ferns eventually produce new leaves and recuperate fully from the parrots foraging activities.    The birds don’t eat the whole frond, just parts of the stems.    I find the fact that the parrots were using the tree fern stems as food remarkable given that the birds that have been  released into the wild since the reintroduction program began were given a wide variety of wild leaves, fruits and seeds before the release, but not tree fern fronds.    

Puertorrican parrot goes bananas about its bathtime

This is a male of the species Amazona vittata vittata, the Puerto Rican parrot.  These birds greatly enjoy getting baths.  In the wild when it rains after a spell of dry weather the parrots become very excited and vocalize powerfully as they get wet under the rain.  In captivity the cages are designed so that the  birds can take baths whenever it rains, however a few will also eagerly seek getting wet under the water we use to clean cages.  From time to time we indulge them and allow them to frolick under the water stream.  As you can see in the video the bird is unabashedly enjoying the water.  These parrots are highly intelligent and we try, as much as it is possible in captivity, to enrich their enviroment with things they like. 

I want to make clear that this animal trusts me a great deal, birds that don't have a trusting relationship with their owners or keepers will not behave this way, some may even feel threatened when their cage is cleaned.  If you want to give your birds a bath like these make sure that the bird doesn't feels threatened, is in a familiar enviroment and that it can get away from the water stream at any time if it chooses to do so.

This particular male has been particularly fecund and a number of his offspring have been released into the wild as part of a program to reintroduce the species to parts of it former habitat where it has beene extinct since the early twenty century.

Amazona vittata, The Puertorican parrot, roosting behavior in the wild

Branch used by several parrots to roost, note the way the leaves and smaller branches have been stripped away

There are seventeen parrots in this photo, it was taken just after dawn, at the moment the first sun rays were stricking the tops of the trees

A branch used by a single pair, see how they have stripped the branch of leaves for a considerable lenght.  They sleep together at the very tip of the branch.

Part of one of the largest flocks of this species since the 1950's, there are twenty two birds in the photo, the flock was composed of thirty two birds.

The birds continue circling and calling and sometimes fly around almost until it is too dark to see

In this unique photo you can see a pair at night

The birds have excellent hearing, and probably have a small degree of night vision.

The Rio Abajo wild flock spends the day foraging in the forest, usually in small flocks of a few birds, but during the months of July to December in the evening they tend to form a large flock that sleeps in a single roosting area.  This is related to their breeding cycle, during the breeding season, which lasts from January to July in the RA forest, the birds become more aggressive, territorial and less likely to form large groups.  Once the chicks fledge the parents aggression toward other birds lessens to a considerable degree and they become much more social.

The roosting flock assembles in the evening and the way they choose which tree they will roost is very noisy and interesting.  First the birds start arriving at an area where several trees are used to sleep.  As the birds arrive they start calling and interacting with the other birds.  Then they start flying back and forth between the different trees singly and in small groups.

The impression I get is that they are going through a process of ascertaining where is the larger concentration of parrots, sort of a popularity vote between the different roosting spots.    As nightfall starts the groups in flight become bigger and bigger until at times the whole flock is in the air at the same time.  Just as it is getting too dark to see the flock finally settles in a single spot with all, or nearly all the birds in a fairly small part of the tree.

The parrots keep calling and squabbling for some time after it is dark but eventually they fall silent.  The parrots are not passive users of the roosting trees, they modify favorite sleeping branches by removing leaves for at times a considerable length of the branch.  Then they sleep near or at the very tip of the denuded branch.  MY guess is that this is an anti-predator measure but this is just speculation as any place where the parrots spend a considerable amount of time eventually becomes denuded of leaves and quite wretched looking due to their proclivity to chew with their powerful bills anything that is at hand nearby when they are perched in a spot.

The flock wakes up early but generally doesn’t leave their roost until the rays of the sun start striking the top of the tallest trees.  Then they might take flight in a single large and very noisy group that lands again after circling over the roost a few times.  After this the birds start slowly going their own way in small groups away from the roosting area.

If you happen to run into one of these roosting areas during a hike in the forest I would ask that you please don’t disturb the birds.  If the parrots are disturbed they will flee the area and abandon the roosting tree.  In the nineties the whole PR parrot population that used to live around the area of the old aviary high near El Yunque peak relocated to the west part of the forest near el Verde.   The suspicion of the project scientists is that the birds fled the area they formerly used because they were alarmed and disturbed when military exercises were staged on the forest.  I can’t blame them, I would have moved too.

Amazona vittata, laparoscopic examination of their internal organs to check their state of health

This is a normal ovary of a mature female, the white irregular patch to the left marks the spot where an egg was released

A healthy testicle

A spent fibrous ovary of an old Amazona ventralis, the owner of this ovary is reproductively senecent

A liver with yellow spots of uncertain etiology 

Lymari (USFWS), Jafet Velez (USFWS), Brian Ramos (DRNA)

Dr. Antonio Rivera the veterinarian that conducted the laparoscopic examinations

A bird ready for the procedure, note the laparoscopic probe  which is the wand like apparatus on the doctor;s hand

The view of the body cavity of the parrot on real time on the computer screen

The first sign that bird is coming out of anesthezia is when they open their eyes, as you can see this bird is not amused

A hispaniolan parrot just removed from the anesthezia apparatus

During the course of the year we test our birds for various diseases, give them physical examinations and do a variety of blood tests on the flock.  Also we evaluate carefully each breeding pair performance during the breeding season.  Usually all these things put together give us a pretty good idea of what to expect from our birds and the state of their health.  But in some cases what exactly is the reason for a bird not breeding is not clear from blood examinations and physical tests.  Then we use a laparoscopic apparatus to see into the bird.

The laparoscopic apparatus is an electronic device that allows us to see inside the bird by using a flexible tube that acts as a camera to capture images of the internal organs.  Since the tube is fairly thin the incision needed is small, more like a hole than a cut.  The flexible tube has fiber optics that bring light inside the animal and allows us to see the internal organs live in a computer screen.  At times we have added a tiny probe that can clip diminutive bits of tissues of interest.  This procedure can be done with very little loss of blood by the animal and after it is finished the birds can get back to their cages and normal routine after a few hours of observation.

The birds are anesthetized using isoflourane.  The flow of the anesthetic is carefully metered to insure that the bird has the proper level of anesthesia.  Unfortunately the level of anesthesia needed to put the birds to sleep is not too far from the level that can kill them.  That means that during the whole operation there is one person paying very close attention to the bird vital signs.  In case a bird stops breathing we have ways to rescue it.  Thankfully, because the staff has a fair amount of experience on treating birds we have never lost one to anesthesia.  We anesthetize the birds because the parrots in our flock object in the strongest terms possible to being handled and will happily put one or a dozen vicious bites in the hand that feeds them.  Our parrots are familiar with medical tests and abhor them wholeheartedly.

Once the bird is safely anesthetized an area on its left side is cleaned and a cut of about one centimeter is made on the skin and muscles.  Through this cut a hole is made into the body cavity and the laparoscopic apparatus is threaded into the body.  Usually the lungs, heart, liver, kidney and gonads are checked for appearance and everything is described, if any abnormality is noted a photo is taken.  Relevant aspects of the bird life history are discussed before each individual laparoscopic examination.   The doctor checks the organs and makes his evaluation and recommendations.  The probe is extracted and the cut sutured.

After the operation the birds are carefully monitored to see that they recuperate successfully from anesthesia.  We all can remember what happened to Michael Jackson because his doctor put him under deep anesthesia and then left him all alone to do some errands.  The birds recuperate fairly quickly from the anesthesia and after they open their eyes and stand on their feet we can confidently say that they won’t unexpectedly croak on us.

I want to thank the USFWS for lending us the laparoscopy machine and for the help of their skilled personnel to give support to Dr, Rivera during the procedure.  I want to thank Jafet Velez (USFWS), Lymari (USFWS), Brian Ramos DRNA) and Dr. Antonio Rivera.

Information about the Puerto Rican Parrot in the Vivaldi (Rio Abajo) aviary

One of the bird of thr Rio Abajo Forest wild flock, raised in captivy.  You can see the antena and the radio transmiter that allow us  to keep track of them

Agency – Department of Natural and Environmental Resources

Bureau of Fish and Wildlife
Division of Wildlife
Endangered Species Section
Project – Program for the propagation in captivity and release into the wild the Puerto Rican parrot
Email address – el.cotorro.electrico@gmail.com, illerandi@drna.gobierno.pr
Project leaders – Ricardo Valentín, Ivan Llerandi
Biologists and Technicians – Brian Ramos, Jong Piel Banch Plaza, Tomás Medina, Eddie Velez, Milagros Cartagena, Gustavo Olivieri, Alberto Alvarez
Location – Rio Abajo State Forest
Jurisdiction – Arecibo, Puerto Rico
Residents – The Vivaldi aviary has 3 permanent residents that assure that there is always someone watching
the aviary and a number of workers that stay overnight when there is the need.

Visits – The Vivaldi aviary is not open to the public
Protected Species – Amazona vittata – the Puerto Rican Parrot

The Aviary also has some pairs of the Hispaniolan Parrot (Amazona ventralis). These pairs are used as foster parents for Puerto Rican parrot chicks when necessary.


Wild Population Estimate – From 30 to 40 individuals in the Rio Abajo Forest, 20-30 in the Caribbean National Forest.

Location of Wild Population – Restricted to the Caribbean National Forest, El Yunque and to the Rio Abajo forest.
Total Population, including parrots in captivity – A total of 269 in captivity, 60 to 70 in the wild.

Captive Groups of the Puerto Rican Parrot

Iguaca Aviary – 133
Agency – U.S. Fish and Wildlife Service

Rio Abajo Aviary – 136 birds
Agency - Department of Natural and Enviromental Resources of Puerto Rico

Wild populations of the Puerto Rican parrot

El Yunque, Caribbean National Forest – 20 – 30
This is the original population that survived the near extinction event

Rio Abajo Forest population 30-40
This is a new population which was started with birds released from captivity. Rio Abajo used to be a stronghold of the PR.

A Short History of the Vivaldi (Rio Abajo) Aviary

Starting date – In 1989 30 Hispaniolan parrots were transferred from the Luquillo aviary to the Rio Abajo aviary to serve as sentinels to detect the presence of infections diseases, to put operational logistics to test, and to evaluate the capacity of the technical staff.

Chronology of Important Events for the Vivaldi Aviary at Rio Abajo Forest

1993 – first group of Puerto Rican parrots transferred from the Luquillo aviary
1994 – first breeding season in Rio Abajo; 2 Puerto Rican (PR) parrot fledglings produced
1995 – second group of 13 Puerto Rican parrots transferred from the Luquillo aviary, 10 PR fledglings produced
1996 – third season; 10 PR fledglings produced
1997 – fourth season; 5 PR fledglings produced
1998 – fifth season; 10 PR fledglings produced
1999 – sixth season; 13 PR fledglings produced
2000 – seventh season; 16 PR fledglings produced; 1 chick received from Luquillo, 9 parrots sent to Luquillo for the release project in El Yunque
2001 – eighth season; 17 PR fledglings produced (3 died after fledging); 3 chicks received from Luquillo; 10
parrots sent to Luquillo for release.
2002 – ninth season; 16 PR fledglings produced
2003 – tenth season; 11 PR fledglings produced
2004 – 11 PR fledglings produced
2005 – 12 chicks
2006 – The best year ever in the Vivaldi aviary until that date, a staggering 29 fledglings are produced in a single season.
2007 - 31 fledglings produced at the aviary
2008 – 30 fledgelings
2009 - 30 fledglings
2010 - 33 fledglings

Total production so far – 271 Puerto Rican fledglings

Captive management Philosophy:


The Rio Abajo aviary is a captive breeding facility that is not open to the public. The principal purpose of the aviary is to be a bank of genetic material representative of the species to provide parrots for future reintroductions into the wild. The facility is equipped with everything necessary to perform many procedures without having to remove the birds from the property. We use a management method that is minimally invasive to the birds’ territories, which are composed of different areas of breeding cages. We use large sized flight cages, of 60 feet in length and 14 feet in height, to socialize the young parrots and so that they can form pairs in a free and natural manner so as to produce pairs of the best quality. We try to maintain an environment that is positively stimulating to the majority of the reproductive pairs and results in less stress.

In the Rio Abajo aviary we have a deep respect for the Puerto Rican parrot as an animal with a large cognitive capacity that needs to be provided not just with the basic necessities of food and water, but also of an environment adequate for exercising the full realm of behavior that they possess. To be able to fill their mental needs we provide spacious cages, fruit, branches, leaves, and toys made of wood, coconut, and rope.  The adult breeding cages are separated from one another by barriers of vegetation and dark screen. We severely limit the access of humans in the areas of breeding cages. We try to reduce to as little as possible the amount of contact the parrots have with humans to avoid the parrots’ becoming accustomed to human contact.  We carefully study the behavior of the young adults and reproductive pairs to look for what might help us to stimulate reproduction in captivity.  We maintain a complete database of our activities with the parrots to be able to evaluate the results of our actions.  We use the Hispaniolan parrot, Amazona ventralis, as foster parents to incubate eggs and raise PR parrot chicks. The eggs and chicks of the Hispaniolan parrots are used to provide practical experience to PR parrot pairs that are new and inexperienced in incubating eggs and rearing chicks

A male in the wild

Puerto Rican parrot, Amazona vittata, a smile of hope

One of the ten most endangered species of parrot in the world, the PR parrot is the focus of an intense effort to restore its populations. A formerly extremely abundant bird whose population was counted in the hundred of thousands if not in millions, it s wild population suffered a catastrophic decline and dwindled to 13 in the 1970's due to habitat loss and other causes. Now there are about 280 individuals and two wild populations, including a new one in the Karst region of Puerto Rico that has about twenty birds. I post this photo to invite you to think of all the species that are in jeopardy due to habitat destruction and unwise resource exploitation. Some of endangered species are superbly adapted to their enviroment but have great trouble dealing with highly unnatural pressures such as being captured for the pet market (one of the reasons for the decline of the PR parrot). I have dedicated my life to save these extraordinary creatures which are profoundly emotive, very independent and a true nightmare to breed in captivity.

There are various posts in this blog about dufferent aspects of the life and biology of Amazona vittata both in captivity and in the wild.

Para informacion en Espanol con respecto a la reproduccion en cautiverio de esta cotorra en el Aviario de Rio Abajo, puede buscar en:bc.inter.edu/focus/a4_n2/valentin_delarosa.pdf