Many do migrate, but some do not. Some can adapt to winter cold and do quite well.
they are migrating to a certain place. (next time find out yourself)
To get away from the cold and go to the heat
Fly Away Home is about a girl named Amy who helps a bunch of birds South for the winter. It's a great book!
They flap their wings and fly away because they want some icy anal sex that only the birds down south can offer ;)
South.Or, if the birds live in the Southern Hemisphere, they fly north for the winter.
Fly North
Owls.
When birds fly South for the winter it is called migration.
The main reason that birds fly south in the winter is because they can't stay in a cold place so they fly south to a warmer place during the winter.
Monarch Butterflies. They fly south for the winter like birds do.
migration
migration