domingo, 1 de dezembro de 2013

SABIÁ POCA


Sabia poca

The Creamy-bellied Thrush is a passerine bird in the Turdidae family. One of the most known by Brazilian thrushes, either by their looks or by their sad song. In different regions has the most various common names: Pale-white, Chalk-white chest, thrush Yellow-billed, Rufous-beak bone-and-robin-bill dishwasher.
His name means the (Latin) = thrush thrush; and the (Greek) amauros = dark brown ekhalinos = one who shows bravery, derision; - (Dark Thrush showing bravery).
features

To identify it, the characteristic dark spot, like being black in some specimens, between the eye and the beak. Furthermore, the head is flat, like the nozzle is in the same plane of the forehead. White chat and risks vary by individual. Some birds seem to have a white collar separating the risks of breast. As soon as they leave the nest, juveniles have chest and abs all dotted with brown oliváceas balls as well as the back and light brown dotted wings. The feathers of the wings keeps these characteristics longer, probably until the second year of life. Has an average size of about 21 cm, big eyes with a dark mark on loro, a region that lies between the nozzle and the eye giving him an air of angry, yellow beak, long, strong and slightly curved, Pink legs hazelnut.
Guy with leucística plumage

What is leucismo?
The leucismo (λευκοσ the Greek Leucos, white) is a genetic characteristic due to a recessive gene, which confers usually white to dark animals.
The leucismo is different from albinism: the leucísticos animals are not more sensitive to the sun than any other. Rather, they are even slightly more resilient, since white color has a high albedo protecting over heat.
The leucismo the opposite is the melanism.
food

They feed on small fruit and invertebrates, especially in the soil. Like other thrushes, like scratching with its beak the dry leaves and dig the ground. Every movement with beak to the side, give a bounce back and are looking for prey, still for a few seconds. If nothing appears, jump forward, scratch around and return to the original position. When the fruit of the fig trees are falling on the floor, concentrated under the tree and satisfied yourself.
reproduction

In August playback starts. At that time, appear birds with bright yellow beak, a feature linked to reproduction. Juvenile or adult birds outside the breeding season have dark or with different proportions of yellow beak. It nests in isolated bushes. The nest has bowl format, is made with roots and fibers with clay finish on the side walls giving solidity, inside there's a padded thin and soft roots without clay. Put 3 to 4 eggs, bulging and the elongated tip, blue-green with spots and ferrugíneas spots. The couple is together in the incubation period.
habits

Perched or floor, have the characteristic habit of swinging the tail quickly vertically. The contact chirp is translated by Puddle, Tupi name for noise. In this call, a characteristic low meow

Nenhum comentário:

Postar um comentário