How do birds keep warm? Well, there are lots of different ways, here are some of the most common ones:
Birds are warm-blooded, meaning they can maintain a body temperature higher than the environment they are in. The are also endothermic, which means they produce their own heat as supposed to getting heat from the sun.
Birds have lots of feathers, which is the most vital thing when it comes to keeping warm. The most important part is the down (the feathers underneath), because without it they would freeze. The rest of the feathers are used for flying and other purposes. When baby birds are born they only have the down, which is how they keep warm and why they cant fly.
The easiest way to stay warm for birds is to migrate to a warmer place, however, they only do that when it’s really cold.
Birds’ body heat warms the air between their feathers. They fluff up their feathers to trap the warm air there, keeping their bodies warmer.
Although most birds’ legs and feet are thin and lack feathers, they are also covered with scales and have very little cold-damageable tissue. When it’s really cold, birds’ legs and feet do feel the cold, that’s why they balance on one leg with the other tucked into their feathers, or sit down with both feet tucked in
A very important thing – for birds – when it comes to staying warm, is to keep the down dry. To do that, birds have glands that produce oil to cover their feathers, making them waterproof.