Birds Without Feathers: The Fascinating World of Featherless Avian Species

Featherless is a term used to describe birds that do not have feathers. These birds are also known as "naked" or "hairless" birds. There are several species of birds that are featherless, including:

1. Ostriches: These large flightless birds have a thick layer of downy feathers on their bodies, but they do not have any feathers on their heads or necks.
2. Emus: Like ostriches, emus have a layer of downy feathers on their bodies, but they do not have any feathers on their heads or necks.
3. Cassowaries: These birds are found in the forests of Australia and New Guinea, and they have a distinctive casque on their heads that is made of bone. They do not have any feathers on their bodies.
4. Kiwi: These small flightless birds are found in New Zealand, and they have a soft, hair-like covering on their bodies instead of feathers.
5. Tinamous: These birds are found in Central and South America, and they have a soft, hair-like covering on their bodies instead of feathers.

There are also some species of birds that have only a few feathers on their bodies, such as the bald eagle and the osprey. These birds are not technically featherless, but they do have very limited feather coverage.