The General A. de C. disapproved of the races.

Flightless birds are birds that can't fly.

The birds sang.

The birds are singing.

Birds sing.

Birds sing.

Birds fly.

These are birds.

The birds fly.

Birds are chirping.

The birds are red.

Birds are chirping.

Birds are warm blooded.

Tame birds dream of freedom. Wild birds fly!

Birds build nests.

Birds lay eggs.

Birds lay eggs.

In the morning, the birds started to sing.

Hawks are birds of prey.

The birds were hungry.

The birds twitter cheerfully.

The birds stopped chirping.

Birds drink water.

How do birds fly?

Pelicans are strange birds.

Crows are smart birds.

What color are the birds?

Birds fly in packs.

Toucans are tropical birds.

The birds are building a nest.

Swallows are migratory birds.

Birds were singing in the sky.

Some of the birds didn't fly.

Not all birds can fly.

Birds are singing in the trees.

Birds sing early in the morning.

The birds in the cage are canaries.

The birds in the cage are canaries.

Birds are flying in the air.

Birds are flying above the trees.

The birds are singing in the trees.

The birds are singing in the trees.

A bird has wings.

Birds fly in the sky.

Birds are natural enemies of insects.