Lesson 11

Question 1

How do birds adapt to extreme weather of food shortages?

Answer 1

hibernation state called torpor, puff up their plumage and tuck their heads into their feathers, put on fat, or reduce the blood flowing to their feet

Question 2

How does torpor work?

Answer 2

body temperature drops, which slows down heart rate, breathing, and metabolic rate

Question 3

Which birds go into a state of torpor?

Answer 3

Swifts and hummingbirds during migration; poor wills are the only birds that go into an extended state of torpor.

Question 4

How do birds stay cool?

Answer 4

pant, seek shade, bathe, or move less

Question 5

What are the three main ways in which birds communicate?

Answer 5

song, call, or non-vocal communication

Question 6

How do songs differ from calls

Answer 6

songs: longer and more melodic and complex; calls: heard year round, short and simple

Question 7

What are the two types of vision? Describe the benefits and drawbacks of each type

Answer 7

Monocular vision= birds that have eyes o either side of their head; large field of vision but poor depth perception; they can use each eye for different tasks Binocular vision- birds that have both eyes at the from of head; gives them smaller field of vision but greater depth perception

Question 8

What kind of birds need dense auricular feathers?

Answer 8

Aquatic birds to protect their ears form water.