contour feather

These hairs therefore feed the bird continuous information about the position of each contour feather.

The filoplumes move with the contour feathers, and have small touch receptors at their bases.

It is also known to sometimes carry significant populations of diatoms (microscopic phytoplankton) on its contour feathers.

A post juvenile transitional plumage is found with very strong barring on the contour feathers of the underside.

Also called contour feathers, pennaceous feathers arise from tracts and cover the whole body.

In some passerines, filoplumes arise exposed beyond the contour feathers on the neck.

This is due to a reduction in the melanin content of the barbules of the contour feathers.

Visible marks of the attachments of contour feathers can be seen on Argentavis wing bones.

Body down is a layer of small, fluffy feathers that lie underneath the outer contour feathers on a bird's body.

Moult of the contour feathers begins on the head and neck region and process along the feather tracts in a general anterior-posterior direction.

Contour feathers are not uniformly distributed on the skin of the bird except in some groups such as the Penguins, ratites and screamers.

The feathers are not preserved well enough to show a specific structure, but they appear similar to the contour feathers of some Yixian Formation birds.

Megapode hatchlings are the sole exception; they are already covered with contour feathers when they hatch.

The body is covered in contour feathers, which protect the bird and also help with waterproofing from a secretion of oil at the base of the feather.

"Now, I don't know if you're familiar with the difference between down and contour feathers..." "No, I'm not," Willis said.

Birds have two main types of feather, contour and down, plus tiny hair-like feathers called filoplumes which lie alongside each contour feather.

Their flight and contour feathers are much like those of other cormorants, but their body feathers are much thicker, softer, denser, and more hair-like.

Covert feathers are preserved covering the upper part of the wing feathers in some specimens, and some specimens have preserved the contour feathers of the body.

Multiple fossils of Microraptor preserve pennaceous, vaned feathers like those of modern birds on the arms, legs, and tail, along with covert and contour feathers.

The only difference between SF and DF birds is in the colour of the afterfeather and shaft (see Feather) of the contour feathers.

The whitish down continues until around 25 days of age, at which point it is gradually replaced by dark contour feathers that eclipse the down and the birds attain a general piebald appearance.

In the green series the Ino is known as the Lutino, with pure yellow contour feathers, white or pale yellow flight feathers and tail feathers and silvery-white cheek patches.

The rest of the tail around the pygostyle was covered in short, non-aerodynamic feather tufts similar to the contour feathers of the body, rather than the familiar feather fan of modern bird tails.

In the Berlin specimen, there are "trousers" of well-developed feathers on the legs; some of these feathers seem to have a basic contour feather structure, but are somewhat decomposed (they lack barbicels as in ratites).

A patch of pennaceous feathers is found running along its back, which was quite similar to the contour feathers of the body plumage of modern birds in being symmetrical and firm, although not so stiff as the flight-related feathers.