birds and mammals

The first bird that scientists know of is called:

• aviantriumph

• archaeopteryx

• Bob

• opticalyphax

Archaeopteryx still had some reptile characteristics. Which was generally not a reptile characteristic:

• large skull

• solid bones

• claws

• feathers

Bird bodies are covered in feathers, but their legs are covered in:

• armor

• exoskeletons

• mucus

• scales

Birds, like reptiles, lay eggs. But unlike most reptiles birds

• protect their eggs.

• sometimes eat their own eggs.

• abandon their eggs and let snakes eat them.

• all bury their eggs under ground.

Birds are

• warm blooded

• cold blooded

Birds are

• vertebrates

• invertebrates

• have an exoskeleton

• not real and only exist in our imaginations

Birds will often sit on their eggs until they hatch. This process is called:

• fertilization

• incubation

• resusitation

• resurrection

All birds fly.

• True

• False

What is the largest bird in the world?

• sparrow

• albatross

• pelican

• ostrich

What adaptation did a bird's bones go through to make it easier for them to fly?

• their bones are solid as a rock.

• their bones are hollow.

• Their bones molt inside and constantly become new bones.

• The bones became cartilage.