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The Furry Critter Network

Red Vented Cockatoo Species Description

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Breed Organization

National Audubon Society

Cornell Lab of Orinthology

The Avian Web


Other Names
Kalangay Cockatoo, Philippine Cockatoo

Classification
Order Psittaciformes
Family Cacatuidae

Scientific Name
Cacatua Haematuropygia

Species Description

The plumage is all white with red undertail coverts tipped white, yellowish undertail and pale yellow underwings. It is 12.2 inches long and has an 8.6 inches wingspan.

The Red-vented Cockatoo makes a characteristic bleating call, as well as screeching or whistling noises that are common to most cockatoos. It is quieter than most cockatoos, and much quieter than the Umbrella Cockatoo or Moluccan Cockatoo.

Habitat

Occurs in lowland native forest, including mangroves, also recorded in secondary growth and around crops; appears to favour forest edge habitats. Sometimes in hills and mountains to altitudes of 1,100m.

Distribution

Red-vented Cockatoos were formerly widely distributed on all larger and many smaller islands of the Philippines, excluding northern and central Luzon. In the early 1990s the total wild population was estimated at 1000-4000, however, by 2008 this was reduced to probably less than 1000. Now remnant populations exist on the islands of Palawan, Tawitawi, Mindanao and Masbate. The species stronghold is the Palawan Faunal Region where the Katala Foundation has been running the Philippine Cockatoo Conservation Programme since 1998. There are around 180 found in wilderness conservation in Narra, Puerto Princesa City, Palawan.

This bird is critically endangered. Populations have decreased dramatically due to illegal trapping for the cage-bird trade. The high price fetched per bird means that chicks are taken from virtually every accessible nest. Other contributing factors are loss of coastal habitat and persecution as an agricultural pest.


Captivity

Not widely kept as a pet. These cockatoos are very affectionate, are on the quieter side and can make charming pets.

The Red-vented Cockatoo is a social species which roosts, feeds, and flies in noisy groups but during the mating season, from March to July, pairs live apart from the flock.

They feed on seeds, and, to a lesser extent, on fruits, flowers, buds and nectar. The species is very adaptable and even forages on crops, particularly rice, when half-ripe, and corn, hence becoming regarded a pest.

Summary

Fairly noisy cockatoo with pleasant character; especially noisy when excited, but also during early morning and late afternoon; initially shy; wild-caught birds often extremely nervous; will then often only leave nestbox to feed; however young birds quickly become confiding; very hard chewers; regular supply of wood necessary; rotten wood and planks quickly chewed; colony system only possible in very large flight; trouble-free and not susceptible when acclimatised. Like other parrots, they have short tarsi but strong claws, and walk with a slow waddle, often using their strong bill as a third limb when climbing branches. They generally have long narrow wings used in rapid flight, with speeds of 70 km/h being recorded for some species. The black cockatoos, however, along with the Major Mitchell's Cockatoo, have shorted more rounded wings and a more leisurely flight.

The cockatoos have large bills which are kept sharp by rasping the two mandibles together when resting. The huge bills are complemented by large muscular tongues which help manipulate seeds inside the bills so that they can be de-husked before eating. During the de-husking the lower mandible applies the pressure, the tongue holds the seed in place and the upper mandible acts as an anvil.

The plumage of the cockatoos is less brightly colored than that of the other parrots, with species generally being either black, grey or white. Many species have smaller areas of color on their plumage, often yellow, pink and red, and usually on the crest or tail. A few species, like the Galah, have larger areas of color. In addition to their plumage many species have brightly colored bare areas around the eye and face, with the Palm Cockatoo having a large red patch of bare skin across the face. A few species exhibit sexual dimorphism in the plumage, with this being most pronounced in the Gang-gang Cockatoo and the Cockateil. Sexual differences in plumage are more common in the black cockatoos, but many cockatoos vary slightly in overall size and weight, with the males being on average larger. The iris color is often brown in adult females and differs from the black irises often seen in adult males, but this may not be totally reliable to identify the gender of a cockatoo.

Behavior: Cockatoos are diurnal, requiring daylight to find their food. They are not early risers, instead waiting until the sun has warmed their roosting sites before feeding. The 21 species are generally highly social and will roost, forage and travel together, often in large flocks. All species require roosting sites that are sometimes located near drinking sites, but many species may travel great distances between the roosting sites and feeding sites.

Cockatoos have several characteristic methods of bathing; they may hang upside down or fly about in the rain, or flutter in wet leaves in the canopy.

Calls and Communication: The vocalisations of cockatoos are loud and harsh. They serve a number of functions, including allowing individuals to recognize one another, warning others of predators, indicating individual moods, maintaining the cohesion of a flock and as warnings when defending nests. The use of calls and number of specific calls varies by species, some like the Short-billed Black Cockatoo have as many as 15 different calls, whereas others like the Major Mitchell's Cockatoo have far fewer. Some species, like the Gang-gang Cockatoo are comparatively quiet, but do have softer growling calls when feeding. In addition to vocalisations, the Palm Cockatoos communicate over large distances by drumming a dead branch with a stick. Cockatoo species also make a characteristic hissing sound when threatened.

Diet and Feeding: The cockatoos are versatile feeders and consume a range of food items. Seeds form a large part of the diet of all species; these are opened with their large and powerful bills. Cockatoos may feed either individually or in flocks that range in size from small to quite immense. The Galahs, corellas and some of the black cockatoos feed primarily on the ground, others feed mostly in trees. The ground feeding species tend to feed in flocks, which can wither feed in tight, squabbling groups where seeds are concentrated, or in more dispersed lines where the seeds are less concentrated and more widely distributed.

While some cockatoos are generalists taking a wide range of seeds, others are specialists. The Glossy Black Cockatoo specializes in the cones of Allocasuarina, often a single species, which it holds in its food and shreds with its powerful bill before removing the seeds with its tongue. Some species take large numbers of insects, particularly when breeding. The large bill is used in order to extract grubs and larvae from rotting wood. The amount of time cockatoos have to spend foraging varies with the season. During times of plenty, they may only need to feed for a few hours in the day, in the morning and evening, and spend the rest of the day loafing, but during the winter most of the day may be spent foraging. During hard times the cockatoos also display versatility in their diet, travelling widely in order to find food, feeding on more green plant material and in some species using their large bills to dig up corms.

Breeding: Cockatoos are monogamous breeders, with pair bonds that can last many years. They may also display site fidelity, returning to the same nesting sites in consecutive years. Courtship is generally simple, particularly for established pairs, with the black cockatoos alone engaging in courtship feeding. Established pairs do engage in allopreening, but all forms of courtship drop off after incubation begins, possibly due to the strength of the pair-bond.

Like most parrots the cockatoos are cavity nesters, nesting in holes in trees. In many places these holes are scarce and the source of competition, both with other members of the same species and with other species and types of animal. This competition is particularly intense amongst larger species.

The nesting hollows are lined with sticks, wood chips and branches with leaves. The eggs of cockatoos are oval and initially white, although they become discolored over the course of incubation. They range in size from 55*40 mm in the Palm Cockatoo to 26*18 mm in the Cockateil. Clutch size varies amongst the family, with the Palm Cockatoo and some other larger cockatoos laying only a single egg, and the smaller species laying anywhere between two to eight eggs. Amongst the cockatoos incubation and brooding responsibilities may either be undertaken by the female alone in the case of the black cockatoos or shared amongst the sexes as happens in the other species. In the case of the black cockatoos the female is provisioned by the male several times a day.

Aviculture: Cockatoos are very popular as pets, not only for their appearance but also for their intelligence and engaging personalities. Well-socialized cockatoos are often affectionate not only to their owner but to strangers as well. In spite of their attractiveness as pets there are drawbacks; they are potentially destructive, with the larger cockatoos in particular prone to destructive behavior. Cockatoos may show aggression during the breeding season; cockatoos are capable of very strong and painful bites.

They also require attention, although experts warn against "spoiling" young birds with too much attention as it make make the bird dependent on the owner, leading to problems later in life. Another drawback as a pet is the fact that most cockatoo species are very loud birds, though they naturally only vocalize for short periods of time twice a day. They can be expensive pets, with a cost which typically ranges from $500-$2000 for the more commonly available species. In addition to the actual cost, cockatoos require a very large cage for their size.

Cockatoos also require an out of cage gym or perch and a steady supply of toys, branches, cardboard boxes, or other chewable items, which prevents future self destructive behavior such as feather plucking. Cockatoos are capable of living up to 30-70 years depending upon species (around 20 years for the smaller Cockateils) and as such they require a long term commitment from their owners. Their longevity is also considered a positive trait as it reduces instances of the loss of a pet.

Cockatoos are popular for use in trained bird shows, and they can also be trained as pets. Cockatoos are generally less food motivated than other birds; some birds may be more motivated by a reward of petting or praise than of food. Cockatoos can often be trained to accept a parrot harness, enabling their owners to take them outdoors. Cockatoos have been used in animal-assisted therapy, generally in nursing homes.

In general, the smaller cockatoo species such as Galahs and Goffin's Cockatoos are considered to be much easier to keep as pets than large cockatoos such as Moluccans. In Australia, where Galah cockatoos are extremely abundant and inexpensive, they are often considered to be good first birds. The smallest species of cockatoo, the Cockatiel is a non-destructive and less demanding alternative making them extremely popular as pets, and among the species most often recommended to new bird owners.


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