All birds do have wings. For birds like Penguins, the wings have turned into flippers.
Because all birds live in different environments and weather conditions. ------------------------------------------------------------------------------------- Birds feathers have evolved to serve a number of purposes, the most important of which are warmth and flight. The feathers need for warmth have to be small, soft and fluffy while the feathers needed for flight have to be large, strong and sleek.
Down jackets are so-called because they contain down, the fluffy feathers found in the undercoat of a duck or goose. Some cheaper down jackets also contain small feathers.
Birds are the only animals with feathers unless you count the dinosaur-birds like archeopteryx. Look for their beaks, scaly legs, feathers and small eyes.
Penguins are covered in feathers, not fur. Penguins molt once each year. During this time, the birds lose all of their feathers.
Down feathers are feathers that lie under a birds body and primary feathers. These feathers are small and puffy, and trap warm air under a bird's feathers.
You are probably talking about down, which is usually taken from ducks or geese and put in things like blankets or coats.
Well, an alive one does. All birds have ears except they are very small and are covered by their feathers.
Emus a birds and so have a beak. The beak has 'nostril openings' just like any other bird.
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Compared to all birds, with an ostrich as the largest-then yes. Compared to all common birds you can see daily-about average. You can always notice a cardinal by their red feathers!
Kiwi are small, flightless birds which are basically defenceless. Having feathers that help to camouflage them within their habitat is one way for the kiwi to protect itself from predators.