plumage
As far as we know, there is no bird living without feathers.
All birds lose their feathers,so your answer is that all birds do.
All birds have feathers, and all birds have down, which are the softer, inner feathers.
A vulture doesn't and I think a Condor also.
No. All birds have feathers.
The pigeon is a bird. All birds have feathers, although sometimes the type of feather varies.
Down feathers comprise the fluffy, heat-retaining layer that lies under the water-repellent outer feathers. Down keeps the bird warm. The outer features keep the bird dry. Down ticking, i.e., the feathers stuffed into pillows, mattresses, etc., comes mostly from ducks, especially eider ducks (hence eiderdown.)
yes infact the penguin doesn't have feathers But they do. All birds have feathers of some sort.
Yes. All eagles have feathers on their heads.
All of them.
The emu is a bird. Therefore, like all birds, it has feathers. The feathers are wispy, but they are feathers, not fur or hair.
Feathers are a structure that are common to all species of bird. Most feathers are very similar in structure, although they vary depending on how and where the bird lives.