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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 first starts a few days after fledging replacing the juvenile plumage with an auxiliary formative plumage; the second a month or so later giving the formative plumage. [3] Abnormal plumages include a variety of conditions. Albinism, total loss of colour, is rare, but partial loss of colours is more common.
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 ...
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 soft-plumaged petrel is a medium-sized petrel. Its plumage is dark grey and white, and its wings are narrow and with a pointed tail distinct in flight. It has a dark grey head with prominent white feathers on the cheeks and throat. There is a white speckling on forehead along with a prominent dark eye patch.
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