Down feathers keep them warm Counter feathers help them fly
Duck feathers are heavier and less expensive. Down feathers are lighter, warmer, and more expensive.
A counter counts up, a timer couts down.
Small, white, down feathers that grow in between flight and contour feathers. They provide insulation for the animals.
The main difference between a down coat and a regular coat is the material that the coat is filled with. A down coat is filled with feathers, the soft down of a goose or duck. Regular coats are filled with a synthetic material that is meant to mimic the down feathers of bird fowls.
Countour feathers and down feathers
Down feathers.
Contour feathers are on the wings and tail.
The down feathers (or the soft feathers underneath the outside feathers).
Ostriches have down feathers. Because they can not fly they have no need for contour feathers...
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.
The inner layer of duck feathers are known as down feathers. Their primary function is insulation. The outer feather layers aid in waterproofing and aerodynamics.
Down feathers.