Question

Quill feathers at the base of the quill, wings are called
(a)Remiges
(b)Barbules
(c)Coverts
(d)Down feathers

Answer 1

Hint: They are called the flight feathers that are present on the wings and the tail region of the birds that are large in size and are of variable structures and colors depending upon the different species of birds.

Complete answer:
Quill feathers are also called coverts which is a set of feathers. The name indicates that they cover the other feathers. They present on the wings and tail for airflow to be direct and smooth.

Additional Information: -The coverts provide buoyancy to the body and help them in flying.
-Covers are of various types depending upon their site of location: ear coverts, tail coverts, and wing coverts.
-As the birds do not have external ears, the ear wings are present behind the eyes of the birds. These coverts are small feathers that cover the ear opening.
-The tail feather is of two types: upper tail coverts and lower tail converts which cover the above and below the base of the tail.
-The wings coverts are of two types: primary flight feathers or primary coverts are present on the outer wing while secondary flight feathers or secondary coverts are present on the inner wing.
-These are the feathers that the birds use to stand or fly. They cover the flight feathers.
-The coverts are the longest, hard, and stiff feathers.

So, the correct answer is, “coverts.”

Note: The flight feathers of the wings are known as remnants which are hard and stiff and are having asymmetrical geometry. They help the birds to turn and twist in the air. Barbules are the small thin feathers at the base of the main rachis which have small hooks. Down feathers are soft and have a large gap between them which stores air and acts as an insulator.