Birds And Mammals Flashcards
A bird’s nearly hollow bones help it to…
Be lightweight in the air
Birds play an important role in the environment by…
Carrying seeds to new locations
As a bird’s wing moves forward through the air, the air pressure on the wing is…
Is less above the wing than beneath it.
During soaring flight, a bird
Rises on a current of warm air
Which characteristic is NOT common to all mammals?
They are ectotherms, cold-blooded.
Fur is a adaptation that allows mammals to…
Survive in cold climates.
What characteristic is used to classify a mammal as a monotreme, marsupial, or placental mammal?
The way their young develops
A mammal’s gestation period is the length of time…
Between fertilization and birth
Birds are the only animals that have…
Feathers
What is the name of the upward force that enables a bird to fly?
Lift
Which type of flight requires the most energy?
Flapping
What is the function of down feathers?
To keep a bird warm
Some birds swallow small stones, which helps them to…
Grind food
Unlike most mammals, bats are able to…
Fly
Where do many birds store food that they are not ready to digest?
In the crop
The large muscle that enables mammals to breathe in and out is called the
Diaphragm