Contour: Gives the bird its stream line shape.
Down feathers: Keeps the bird warm.
Down feathers are located underneath contour feathers. They are fluffy and provide insulation to help birds regulate their body temperature.
Ostriches have down feathers. Because they can not fly they have no need for contour feathers...
Birds are the only animals with feathers. They have two main types. Strong, lightweight contour feathers give birds their coloring and shape. They help the birds steer while flying. Soft, fluffy down feathers give adult birds a layer of protection next to their skin. Down feathers cover the bodies of young birds."Actual information from a book, better use it, 'cause you'll probably need it for the Seventh Grade, right... ? I would know, since I am one. :D"
Down
contour feathers
Although contour feathers are the most prominent type of feathers in a bird's plumage, birds can also have other types of feathers like down feathers and filoplumes. Contour feathers are responsible for providing the shape and waterproofing for a bird, while down feathers provide insulation. Filoplumes are used for sensory purposes.
contour and the feathers to keep them warm are down.
In between contour feathers is a patch of bare skin called the apteria. Down feathers develop in the apteria preserving air trapped under the contour wings. Downy feathers are shaped of a incredibly unfastened structure that is flexible and helps trap air close to the bird.
There are several different kinds of feathers: bristle, semiplume, filoplume, down, feathers with vanes like the contour and flight feathers.
Small, white, down feathers that grow in between flight and contour feathers. They provide insulation for the animals.
Definition: The outer layer of feathers that cover a bird's body, wings, and tail and give the bird its characteristic appearance. Contour feathers differ from other body feathers (such as down and semiplumes) in that they consist of two vanes along a shaft that have interlocking barbs that give strenght and structure to the feather shape
Feathers can be classified based on the structure of their quills into different types, with the primary categories being contour feathers, flight feathers, and down feathers. Contour feathers have a central shaft (quill) and are responsible for the bird's streamlined shape, while flight feathers, such as primary and secondary feathers, are specialized for flight and have a robust quill. Down feathers, on the other hand, lack a prominent quill and provide insulation. Each type serves distinct functions related to a bird's physiology and ecology.