extreme environment birds

Question 1

Counter current heat exhange in bird feet

Answer 1

Warmer arteriol blood form the body gives heat to colder veinous blood from the foot

Question 2

regional heterothermy

Answer 2

maintain different temperature zones in different regions of the body

Question 3

gular fluttering

Answer 3

forcing air to back of throat to dispurse heat

Question 4

pelagic

Answer 4

spends most time in sea