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Animals that sleep through the winter can not time how long to hibernate.Garter Snakes have solved this problem.They use the temperature when day time heat drops to 0 point c ( 32 point F) these snakes slither out of there underground dens when the temperature is 20-28 point c(68-82 point c) they come out of there caves.

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http://www.livescience.com/8639-change-seasons-affects-animals-humans.html

https://askabiologist.asu.edu/seasonal-breeders

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Days get longer in the spring. This allows animals the breed .

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Most mammals give birth in the spring when the temperature is higher and there is more food .

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The white ibis is getting illnesses in the summer because people on vacation are feeding them pop corn, chips and candy
and more unnatural foods for the breed .

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Migration is all most universal in the animal world in fact even sea sponges and jellyfish.  Make use of that chance .The animals walk, run, leap, fly, drift and/or swim.

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Less daylight for the northern Hemisphere the change can make big changes for animals.

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If a animal has a baby in the wrong time of year when the food when is low she will have  a hard time raising her/his young.

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Animals that hibernate under ground breed in the spring cannot time how long when to reproduce.They use the change of temperature between seasons to time there hibernation and breeding.