Because there is too cold.They must migrate to stay alive.
Storks migrate for the same reason as every other bird. They favor warmer weather conditions, so they migrate in the winter when their location becomes cooler.
migrate
No, they don't migrate. They hibernate in the winter.
they migrate in december and january
Birds usually migrate in the winter.
they migrate to Florida
They migrate in the winter.
crows migrate in winter and summer
no
The monarch butterflies undergo annual migration from Canada to Mexico to escape the cold winter temperatures.
All Hammerhead sharks migrate to warmer waters in the winter
the conditions in the winter force woodsandpiper to migrate