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Lecture 16

BIOL 1902 Lecture 16: Lecture 16 Notes

2 Pages
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Department
Biology
Course Code
BIOL 1902
Professor
Michael Runtz

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Lecture 16 How animals deal with predictable shortage of food • Dormancy/Hibernation • Migration How animals deal with unpredictable shortage of food(Seeds and Nuts, Berries and fruits, Small Mammals) • Move to food-rich regions when needed (Bohemian Waxwing) • Irruption: migration to a new area that does not happen normally • Nomadic and Irruptive (Waxwing/Crossbills/Grey Owls) • Shrikes/Owls store extra prey by impaling them (Larder= stash of food) • Grey Squirrels create different solitary caches of food (Scatter Hoarding) use memory • Grey Jays don’t migrate and scatter hoard o Enlarged salivary glands, o sticky saliva, o nest early o Enlarge hippocampus for better spatial memory Chickadee’s hippocampus grow larger before winter o Red Squirrels create larger stash of food called middens o Chipmunks store lots of food due t
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