Air is an insulator. Air trapped in the puffed up feathers of the bird is warmed by the birds own body heat and stays trapped close to the birds skin. This is similar to how a divers wet suit works. The water of a wet suit is warmed by the heat of the divers body and is trapped within the space between the skin and the material of the wet suit which insulates the diver from the much colder water surrounding them.
As with other birds, the wing of a blue jay is covered in feathers.
No. Only birds have feathers. Kangaroos are mammals, not birds.
Pretty much all birds have feathers
Yes. Kingfishers are birds, and all birds have feathers.
no they have feathers
There are no animals that have feathers besides birds.
Cassowaries are birds so, like all birds, they have feathers. Only mammals have fur.
Mammals are not covered with feathers. Mammals grow hair, but do not have to be covered with hair. Birds are covered with feathers.
NO!! because they have feathers
Yes, especially because they are birds. :)
Cute question! Birds like to get high. Feathers allow birds to fly.
Kiwi have feathers because they are birds. All birds have feathers, even though the nature of the feathers may differ from that of birds that fly.Kiwi have shaggy feathers which are densely packed, about 2.5cm thick, to keep them warm and dry.