It matters the tempature.Like,hot or cold.And they wait for the cold fronts to come cause their going that way so, it gives them a boost.
When it is Winter birds migrate and go to South America. In spring the birds come back. Birds in the summer make Babies. In the fall birds get ready for winter.
In summer birds have enogh food but in the winter they need more food so they go south.
When it is winter birds migrate to south America.In the spring birds come back.The reason birds migrate is to get food .They also migrate to get warmer and cooler.
It changes by weather.also hot or cold.
The changes effect bird migration because if it is hot or cold.
The changes effect bird migration by the type of season it is like winter.In winter the air is cold and not all the birds migrate there are two that don't.In spring,summer and fall birds are able to stay in their area.In spring flowers bloom and their are worms for the birds to eat.In the summer it is hot and the birds still don't have to migrate and its the same with fall.That is how the seasons effect birds migration.
In the winter birds migrate for warmth and food .
They move for food like insects. Also because of the temperature of the season.
The season changes affect bird migration because bad weather may occur and the bird may get off track. Birds migrate because of food. They migrate because their prey goes hiding or berries disappear because of cold weather. The small birds eat worms and berries and they have to go where they can find food. Bigger birds, like raptors or hawks, migrate because they need food too. They eat smaller birds, and since the smaller birds migrate south, so do the raptors or hawks. The birds come back in spring because food is back. Then, in spring, the birds have their offspring.
The season changes effect bird migration because in warmth the have food and in coldness .They do not have that much food.
When it is winter they go to South America for food.they come back in the summer.of it rains it does'nt help . That is what I know about migration .
When the weather gets cold they travel south because there is not much food. When the weather goes back to what it was there is more food so they go back.
When it is cold they travel to get more food. When it is back and warm they travel back.
It changes for the weather.