Skeleton of a Typical Bird
is especially suited for flying. Each bone is as
thin and small as it can be and still be strong
enough to support the bird's body.
Thin-walled pouches found in various
parts of a bird's body are connected directly to
the lungs and form a part of the animal's
bellowslike breathing mechanism.
A Bird's Foot
A sleeping bird cannot fall off a twig
Types of Bird
Birds could not fly
without feathers. The thick coat of feathers
streamlines the body and helps the bird glide
smoothly through the air, and also helps keep the
A bird is able to fly
mainly because the pressure of the air on top of
its wings is less than the pressure below.
How Birds Build Their Nests
How Big Are
The largest egg is about 6 inches long and weighs
about 3 pounds, while the smallest is barely 1/2
inch long and weighs less than 1/50th of an
The Shape of
Almost all birds' eggs
are roughly oval in shape, and there are a few
good reasons for this fact.