The same reason you don't freeze and fall when it's below freezing. Birds have a metabolism that keeps them warm in addition to their feathers, and flying helps keep it up. Different species can tolerate different amounts of cold, and the ones that don't tolerate it are not generally found in regions where it gets too cold for them.
Most birds migrate in the winter or fall because it is too cold for them. If they did not migrate, they could freeze! When birds migrate they fly and fly until they reach a place that is not so cold.
hail
because it is cold
rain and hail can fall at the same time because if the weather is cold enough it will freeze but it doesn't freeze every single drop so it hails and rains at the f***in same time
The leaves can not survive the cold. They would freeze. The trees become dormant and can survive the winter.
humming birds migrate the same way the other birds do. Like when it is cold in north they fly south and when it is cold in the south they fly north.
No. It will get cold but it will not freeze.
Cold temperatures will, if cold enough, freeze water.
sleet A plus
It will freeze if you get it cold enough.
Because the enzymes in freeze with the cold and move a little bit but not much
It expands when you freeze it