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Puerto Rican Amazon

A species of Amazon parrots
Scientific name : Amazona vittata Genus : Amazon parrots

Puerto Rican Amazon, A species of Amazon parrots
Botanical name: Amazona vittata
Genus: Amazon parrots
Puerto Rican Amazon (Amazona vittata) Photo By Tom MacKenzie of U.S. Fish and Wildlife Service Southeast Region , used under CC-BY-2.0 /Cropped and compressed from original

Description

The Puerto Rican amazon measures 28–30 cm (11.0–11.8 in) and weighs 250–300 g (8.8–10.6 oz), or 275 g (9.7 oz) on average. Although small compared to amazons in general, it is similar in size to other Greater Antilles Amazona species. Sexual dimorphism is not present. Both males and females have predominantly green plumage, though their feathers have blue edges. The primary flight feathers of the wings and the main covert feathers are dark blue. The color of the feathers on the underside varies depending on the body part: the feathers on the underside of the wings, which can be seen during flight, are bright blue; those in the tail have yellow-green tone. Their underparts are paler and yellow-tinged, their foreheads are red, and they have white ovals around the eyes. The iris is brown, the bill a horn color, and the legs yellow-tan. Aside from DNA tests, males and females can only be distinguished by behavioral differences during the breeding season. Immature birds have plumage similar to adults.
Size
29 cm
Life Expectancy
20-40 years
Feeding Habits
Puerto Rican Amazon consumes a varied diet of fruits, seeds, leaves, flowers, and bark from approximately 60 different plant species, with unique dietary preferences and specialized foraging behaviors.
Habitat
The puerto Rican Amazon inhabits various forested regions ranging from the lush montane forests to coastal scrublands and mangroves. These birds are typically found at elevations between 200-600 meters where different zones are crucial for their survival. The tabonuco forest, although heavily logged, was once a key area for feeding and breeding. The palo colorado zone serves as an important nesting habitat, while the sierra palm forests are significant for their fruit, which is synced with the puerto Rican Amazon's breeding season. Occasionally, puerto Rican Amazons also utilize dwarf forests as a food source.
Dite type
Herbivorous

General Info

Behavior

The Puerto Rican amazon is diurnal, typically beginning its day half an hour after sunrise. It is generally secretive when inside its nest, using its green plumage as camouflage. In contrast, it may be vocal and noisy when outside the nest. Upon taking flight, its color pattern provides some contrast to the forest. The flight mechanism of this species is similar to the one found in other amazons, and involves strokes below the body axis, unlike most birds whose wings flow above their bodies in flight. Amazons can fly moderately fast, reaching a top speed of approximately 30 km/h (19 mph), and are fairly agile when evading predators in mid-air. When in search of food, the parrots group in pairs. Couples and their fledged young display a tendency to stay together. The amazon makes two flight calls, a take-off squawk which consist of a pattern of long squawks, and a loud "bugle", commonly used in flight and which may have several meanings depending on the circumstances when it is used.

Distribution Area

The precise distribution of the Puerto Rican amazon before the arrival of Spanish colonialists is uncertain, because of a lack of contemporary records and then the extermination of the indigenous Taíno people, but the species was apparently widespread and abundant. There is also evidence the species may have inhabited other nearby islands, such as Antigua, Barbuda and the Virgin Islands. Estimates of the parrot's early numbers vary greatly. Some authorities claim that there were once more than a million individuals, while others suggest a more modest population of 100,000. During the first 150 years of Spanish rule the human population was small, and in 1650, when the population of the island was 880 people, the species was still abundant throughout the archipelago. After 1650, human habitation increased exponentially, and by the 18th century the Puerto Rican amazon population started to be affected. Heinrich Moritz Gaede, a German naturalist, declared that by 1836 the parrot population had noticeably declined. Even so, as late as 1864, British ornithologist Edward Cavendish Taylor noted that the parrots were still common near the island's capital, San Juan. At first, human activity had not posed a significant threat to the Puerto Rican amazon. The Taíno hunted the parrot but without much effect on its population. In the past 200 years, however, many factors have led to a drastic decrease in the birds' numbers: agricultural development, the construction of roads, hydroelectric development, and the adoption of young chicks as pets. Especially during the latter half of the 19th century, most of Puerto Rico's virgin forests, a historical habitat of the species, were cleared for agricultural development, primarily for the production of sugar, cotton, corn and rice. The amazon quickly came to rely on these crops as its main food source and so became seen as a pest; local farmers repelled or hunted the bird if possible. As agriculture expanded, the amazon's habitat disappeared further and its population declined. The species was historically found in mature or old-growth forests in Puerto Rico at all elevations, and in holes, cliffs, and other diverse habitats at lower elevations. The species could be found at medium elevations in the Guajataca State Forest (until 1910) and the Rio Abajo State Forest (until the 1920s), and at high elevations in the Carite State Forest (until the 1930s). Accounts from the early 1900s describe the parrots traveling away from the Luquillo forest and the Sierra de Cayey towards the main island's coast to find food. The species was extirpated from Culebra by the early 20th century. A karst-limestone region in the northwestern part of Puerto Rico was identified as a haven for the species. In particular, a region named Valle de las Cotorras (Valley of the Parrots), located between San Sebastián and Morovis, was home to a sizable population. Eventually their natural habitat was reduced to the Cordillera Central. By 1960 they were only to be found in primary forest at the Luquillo Mountains in El Yunque National Forest. The species is currently found at elevations between 396 and 823 m (1,299 and 2,700 ft). Since the species requires mature forests with open-cavity trees for reproduction, it does not occur in dwarf and secondary forests. By the 1950s, there were only 200 parrots in the wild, and in 1975 the population reached an absolute low of 13 individuals. Numbers then recovered, and in August 1989 there were an estimated minimum of 47 individuals. But on September 18, 1989, Hurricane Hugo struck the northeast coast of Puerto Rico inflicting heavy casualties on the remaining birds. In the aftermath of the hurricane the population was estimated at 23 individuals. In 2004, the wild population was 30–35 individuals, and the long-term trend appears to be stable albeit with some fluctuations. The current range of the species is 16 km (6.2 sq mi), 0.2% of what it once was.
Puerto Rican Amazon (Amazona vittata) Puerto Rican Amazon (Amazona vittata) Photo By Tom MacKenzie of U.S. Fish and Wildlife Service Southeast Region , used under CC-BY-2.0 /Cropped and compressed from original

Scientific Classification

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