Lesson 26 Terms Flashcards
1
Q
Air sacs
A
provide a constant supply of oxygen while birds fly and keep birds cool by expelling heat
2
Q
Brooding
A
sitting on the eggs to keep them warm as they develop
3
Q
Contour feathers
A
strong feathers found on the body, wings, and tail that aid in flight
4
Q
Down feathers
A
soft feathers that provide insulation and are very light
5
Q
Keratin
A
a hard protein; makes up feathers for birds
6
Q
Migratory patterns
A
birds relocate as the season changes where they have better access to food and nesting locations
7
Q
Placental
A
a mammal whose offspring develop inside the female’s uterus
8
Q
Pneumatized bones
A
porous bones that are hollow and light
9
Q
Torpor
A
deep sleep with decreased heart rate but maintain warm body temperatures
10
Q
Viviparously
A
inside the mother
