because of their instincts.
they know when to migrate because of the weather and the food decreasing
love birds miograte down south, if you know what i mean ;]
Birds that migrate are called migratory birds. Birds that do no migrate are called sedentary birds. Over 4000 species of birds migrate, mostly those native to colder regions.
scientists believe birds detect changes in the temperature and daylight as days get shorter and the amount of light decreases, birds produce certain hormones that seem to trigger the drive to migrate
i dont know if you know this but birds migrate to the south
birds like the poo birds and sparrows are likely to migrate in wales
they do not hibernate because they are birds and birds do not hibernate but the bald eagle does migrate
They migrate by a special formation
No, not all birds migrate. The American Cardinal, for example, does not migrate. It mostly depends on your location, for what birds do and do not migrate.
mountain lions don't migrate because only birds migrate I think. But I don't know why they don't hibernate, I need to know that myself... Sorry, I can't help that much...
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.
I dont know if you would call it migrating....their feathers are made to protect them from cold or heat, so they dont need to migrate....i think....