climate means the average temperature / weather in an area & winter has cold temperatures / weather ->  winter can cause the climate in an area to become cold  winter can cause the climate in an area to become cold & an animal requires warmth for survival ->  some animals must move to warmer climates in the winter  some animals must move to warmer climates in the winter & migration is when animals move themselves from a cooler climate to a warmer climate for the winter ->  an example of migration is moving to a warmer climate in the winter  an example of migration is moving to a warmer climate in the winter & some birds fly south for the winter ->  an example of migration is birds flying south in the winter  an example of migration is birds flying south in the winter & migration is a kind of adaptation -> an example of an adaptation is birds migrating south in the winter