How Do Birds Keep Warm in the Winter?

What is one way birds keep warm in the winter?

• By hibernating

• By shivering

• By migrating south

• By growing fur

What is the role of feathers in keeping birds warm?

• They make birds look bigger to predators

• They change color to absorb more sunlight

• They trap pockets of air for insulation

• They help birds fly faster

How do black-capped chickadees maintain their body temperature?

• By migrating to warmer areas

• By having great insulation and being active

• By eating less food

• By staying inactive

What is a unique feature of the black-capped chickadee's brain?

• It shrinks in the winter

• It has a large hippocampus for spatial memory

• It changes color with the seasons

• It allows them to sing complex songs

How do some birds weatherproof their feathers?

• By using tree sap

• By covering them with leaves

• By using a special oil from a gland near their tails

• By using mud

What do tree swallows do to keep warm?

• They grow extra feathers

• They huddle together in shrubs and trees

• They migrate to the equator

• They build underground nests

How do cavity nesters like nuthatches stay warm?

• By using tree cavities and nest boxes

• By building nests in the ground

• By flying south for the winter

• By growing thicker feathers

What is a method used by waterfowl to conserve heat?

• By diving underwater

• By swimming in circles

• By using countercurrent heat exchange in their legs

• By flying in V formations

How do birds minimize heat loss through their feet?

• By constantly moving their feet

• By wearing natural foot coverings

• By having specialized scales on their feet and legs

• By keeping their feet in the sun

What is one way Canada geese conserve body heat?

• By flying south

• By tucking their bills under their back feathers

• By eating more food

• By growing thicker feathers