Birds are warm-blooded animals.
All birds have feathers.
Feathers are unique to birds.
Birds lay eggs.
Most birds build nests for their eggs.
Birds have hollow bones.
Hollow bones help birds fly.
Not all birds can fly.
Penguins are birds that cannot fly.
Ostriches are the largest living birds.
Hummingbirds are the smallest living birds.
The kiwi is a flightless bird from New Zealand.
Chickens are the most common bird in the world.
Ducks are waterfowl.
Swans are among the largest flying birds.
Geese migrate long distances.
Pigeons are found in cities worldwide.
Doves are closely related to pigeons.
Crows are known for their intelligence.
Ravens are larger than crows.
Parrots can mimic sounds.
Macaws are large,
Colorful parrots.
Cockatoos have a crest of feathers.
Owls are mostly nocturnal birds.
Eagles are large birds of prey.
Hawks are also birds of prey.
Falcons are fast-flying hunters.
Vultures feed mainly on carrion.
The albatross has one of the largest wingspans.
Pelicans have a pouch under their beak.
Herons have long legs for wading.
Flamingos are pink from their diet.
Storks are large,
Wading birds.
Cranes are tall and graceful.
The peacock is known for its colorful tail.
Turkeys are native to North America.
Quails are small,
Ground-dwelling birds.
Pheasants are colorful game birds.
Partridges are related to pheasants.
Guinea fowl are native to Africa.
The cassowary is a large,
Flightless bird.
Emus are the second-largest living birds.
Roadrunners are fast-running ground birds.
Kingfishers dive into water to catch fish.
Puffins are seabirds with colorful beaks.
Terns migrate long distances.
Gannets dive into the sea for food.
The cormorant is a diving bird.
Loons are also diving birds.
Grebes are aquatic birds.
The ostrich has the largest egg of any living bird.
Hummingbirds can hover in place.
Swallows catch insects in flight.
Martins are related to swallows.
Swiffs spend much of their lives in the air.
Woodpeckers peck wood to find insects.
The toucan has a large,
Colorful bill.
The hornbill also has a large bill.
Jays are colorful members of the crow family.
Magpies are black and white birds.
Blackbirds are found in Europe and America.
Starlings often gather in large flocks.
Sparrows are small,
Brown birds.
Finches are small,
Seed-eating birds.
Canaries are finches often kept as pets.
Cardinals are bright red finches.
Blue jays are found in North America.
Robins are common songbirds.
The rushes are medium-sized songbirds.
Warblers are small,
Often colorful birds.
Wrens are small,
Brown songbirds.
Larks are known for their singing.
Nightingales are famous for their song.
Minas can mimic human voices.
The lyrebird can mimic many sounds.
Birds have beaks instead of teeth.
Beak shapes vary depending on diet.
Most birds have two wings.
Birds usually have four toes.
Raptors have strong talons.
Waterbirds often have webbed feet.
Birds breathe with air sacs as well as lungs.
Many birds migrate seasonally.
Arctic terns migrate from pole to pole.
Birds use songs to attract mates.
Birds use calls to warn of danger.
Some birds use visual displays.
Birds preen to keep feathers clean.
Molting replaces old feathers.
Most birds can see colors.
Some birds can see ultraviolet light.
Birds have excellent vision.
Some birds have good hearing.
Birds usually have poor senses of smell.
Birds reproduce by laying eggs.
Egg shapes vary among species.
Birds incubate eggs with body heat.
Most birds care for their young.
Birds are warm-blooded animals.
All birds have feathers.
Feathers are unique to birds.
Birds lay eggs.
Most birds build nests for their eggs.
Birds have hollow bones.
Hollow bones help birds fly.
Not all birds can fly.
Penguins are birds that cannot fly.
Ostriches are the largest living birds.
Hummingbirds are the smallest living birds.
The kiwi is a flightless bird from New Zealand.
Chickens are the most common bird in the world.
Ducks are waterfowl.
Swans are among the largest flying birds.
Geese migrate long distances.
Pigeons are found in cities worldwide.
Doves are closely related to pigeons.
Crows are known for their intelligence.
Ravens are larger than crows.
Parrots can mimic sounds.
Macaws are large,
Colorful parrots.
Cockatoos have a crest of feathers.
Owls are mostly nocturnal birds.
Eagles are large birds of prey.
Hawks are also birds of prey.
Falcons are fast-flying hunters.
Vultures feed mainly on carrion.
The albatross has one of the largest wingspans.
Pelicans have a pouch under their beak.
Herons have long legs for wading.
Flamingos are pink from their diet.
Storks are large wading birds.
Cranes are tall and graceful.
The peacock is known for its colorful tail.
Turkeys are native to North America.
Quails are small,
Ground-dwelling birds.
Pheasants are colorful game birds.
Partridges are related to pheasants.
Guinea fowl are native to Africa.
The cassowary is a large,
Flightless bird.
Emus are the second-largest living birds.
Roadrunners are fast-running ground birds.
Kangfishers dive into water.
Puffins are seabirds with colorful beaks.
Terns migrate long distances.
Gannets dive into the sea for food.
The cormorant is a diving bird.
Loons are also diving birds.
Grebes are aquatic birds.
The ostrich has the largest egg of any living bird.
Hummingbirds can hover in place.
Swallows catch insects in flight.
Martens are related to swallows.
Swifts spend much of their lives in the air.
Woodpeckers peck wood to find insects.
