Search results
Results from the WOW.Com Content Network
addled eggs Also, wind eggs; hypanema. [5] Eggs that are not viable and will not hatch. [6] See related: overbrooding. afterfeather Any structure projecting from the shaft of the feather at the rim of the superior umbilicus (at the base of the vanes), but typically a small area of downy barbs growing in rows or as tufts.
Technically, both are made from keratin, which is also the protein that makes up skin, feathers, nails, hooves, claws, and horns. [3] "The way I think a lot of people understand fur versus hair is in the density of follicles," says Ross McPhee, Curator of the Department of Mammalogy at the American Museum of Natural History. "So for fur-bearing ...
This is a large duck, and the male's long central tail feathers give rise to the species' English and scientific names. Both sexes have blue-grey bills and grey legs and feet. The drake is more striking, having a thin white stripe running from the back of its chocolate-coloured head down its neck to its mostly white undercarriage.
Feathers that have been artificially dyed by humans are even more highly sensitive to light. [12] In addition, the degree of fading can vary between bird species. [3] Most of the change in feather coloration occurs somewhat quickly upon initial exposure to light, and once this happens, the fading becomes somewhat stabilized. [14]
Taking this one stage further, the clue word can hint at the word or words to be abbreviated rather than giving the word itself. For example: "About" for C or CA (for "circa"), or RE. "Say" for EG, used to mean "for example". More obscure clue words of this variety include: "Model" for T, referring to the Model T.
Flying birds have different wing and feather structures that make flying easier, while flightless birds' wing structures are well adapted to their environment and activities, such as diving in the ocean. [21] Species with certain characteristics are more likely to evolve flightlessness.
The bottom, however, is a rich deep yellow/light orange. Their beak is black, as well as the feathers under their chin. Its feet are of a gray color, save for black talons. The bird has white skin, with its face having nearly no feathers beside a few black ones spaced apart from each other forming a striped pattern around the eyes.
The word down comes from the Old Norse word dúnn, which had the same meaning as its modern equivalent. [1] The down feather is considered to be the most "straightforward" of all feather types. [2] It has a short or vestigial rachis (shaft), few barbs, and barbules that lack hooks. [3] There are three types of down: natal down, body down and ...