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For birds that do not completely molt into full adult plumage the first time, a numbering system is used to signify which plumage it is in. For example, for the first time a bird enters basic plumage, the plumage is known as first basic plumage; the second, second basic plumage. The numbers are dropped after a bird achieves its full adult plumage.
The placement of feathers on a bird is not haphazard but rather emerges in organized, overlapping rows and groups, and these feather tracts are known by standardized names. [1] [2] Most birds moult twice a year, resulting in a breeding or nuptial plumage and a basic plumage.
Alagoas foliage-gleaner Conservation status Extinct (2011) (IUCN 3.1) Scientific classification Domain: Eukaryota Kingdom: Animalia Phylum: Chordata Class: Aves Order: Passeriformes Family: Furnariidae Genus: Philydor Species: † P. novaesi Binomial name † Philydor novaesi Teixeira & Gonzaga, 1983 The Alagoas foliage-gleaner (Philydor novaesi) is an extinct passerine bird in the Furnariinae ...
In non-breeding plumage, the cap is brown and the facial markings are less distinct. The song is a trill and the bird has a piercing flight call that can be heard while it is migrating at night. In the winter, Chipping Sparrows are gregarious and form flocks, sometimes associating with other bird species.
A field mark is a characteristic (e.g. in plumage) useful for species identification, usually birds. They are often used in field guides or identification keys. In a broader context, a field mark might be referred to as a character (e.g. "differential character" or "diagnostic character"). For birds this may include plumage, flight ...
The position of the nest and whether it has a greater chance of being under predation has exerted constraints on female birds' plumage. [47] A species of bird that nests on the ground, rather than the canopy of the trees, will need to have much duller colors in order not to attract attention to the nest. The height study found that birds that ...
They are related to waxwings, and like that group have soft silky plumage, usually gray or pale yellow in color. All species, with the exception of the black-and-yellow phainoptila, have small crests. They range in size from 18 to 25 cm in length and are mostly slender birds (with the exception again of the black-and-yellow phainoptila).
The long-tailed broadbill displays a yellow plumage on the throat. Blueish-green plumage on the belly, back, and wings. The long-tailed broadbill is a forest bird that lives on insects. It is very sociable and normally travels in large, noisy parties except during the mating season. It builds a pear-shaped nest in a tree.