Birds are the largest animals that are ___________ to fly. They
have streamlined __________ and flat feathers to reduce resistance
during flight. Their hollow bones ____________ body weight.
All birds lay eggs. Their eggs are ___________ in a hard shell.
Some birds like the ostriches have wings but __________ fly. They
have other abilities like strong and powerful legs for ____________
away from predators.
Every bird has ___________ own distinctive egg. But all eggs
are pointed at one end and round at the _____________. This is to
_______________ the eggs from rolling in any direction and hence,
rolling off the nest.
The hard, pointed mouth of a bird is known as the _________
or beak. The shape and size of the beak __________ on its eating
____________. The eagle with its hooked beak is ideal for tearing
flesh.