1. Razorbill
   Arctic tern
2. Northern gannet
   European storm petrel

The most interesting part about the arctic tern is its migratory route. Every year, they travel over 70,000 kilometers from the northern tips of North America to Antarctica and back again. They have by far the longest migratory pattern of any animal.

1. Emperor penguin
   Little penguin
2. Adelie penguin
   Gentoo penguin

Few animals in the world live in harsher conditions than the emperor penguin. If you want to learn more about the extreme conditions that they withstand, you can learn about them in the documentary, "March of the Penguins."

1. Frigatebird
   Peregrine falcon
2. Golden eagle
   Eurasian hobby

The peregrine falcon is the fastest bird in the world. It can reach speeds of over 200 mph when it swoops to catch its prey. The fastest speed ever recorded by a peregrine falcon was 242 mph.

1. Magnificent frigatebird
   King of Saxony bird of paradise
2. Paradisaea
   Parotia

The next time you're deep in the forests of New Guinea, keep your eye out for this brightly colored bird. You can easily spot them for their long ornamental head plume that looks fake at first glance.

1. Kakapo
   Kiwi
2. Emu
   Cassowary

The kiwi is the smallest member of the ratites group of birds that contains other flightless birds like emus and cassowaries. The kiwi is nocturnal, so even if you head to New Zealand, you're unlikely to see one in the wild.

1. Polish chicken
   Rhode Island red chicken
2. Australorp
   Brahma chicken

The Polish chicken is often bred for shows and comes in several color variations. They grow up to weigh about 6 pounds, but their exact origin isn't known. Despite their name, it's thought that they may originate from the Netherlands.

1. Gold-headed quetzal
   Cockatoo
2. Kookaburra
   Golden pheasant

You can find this large bird from the most southern tip of America into South America. You can easily spot them by their bright red stomach and green wings. They usually grow to at least a foot long and eat mostly fruits and berries.

1. Bleeding heart pidgeon
   Mourning dove
2. Rock dove
   Nicobar pigeon

Can you guess how the bleeding heart pigeon got its name? You can easily recognize them from all other pigeon species by the bright red spot on their chest. Both the males and females share the same distinct red coloring.

1. Green jay
   Blue jay
2. Eurasian jay
   Steller jay

The green jay is endemic from Southern North America to Central America. It is easy to spot by its dull-green body, blue head and long tail. Their diet consists mostly of insects, small vertebrae and seeds.

1. Common magpie
   Formosan magpie
2. Eurasian magpie
   Black-billed magpie

The Formosan magpie goes by several other names, such as the Taiwan blue magpie. As its name suggests, it lives on the island of Taiwan where it lives mostly in forests and eats snakes, mice, fruits and seeds.

1. Mallard
   American black duck
2. Canvasback
   Whistling duck

The mallard is one of the most widespread bird species in the world. They often breed with local ducks like the American black duck and produce hybridized offspring. Most domesticated ducks originally came from the mallard.

1. Chipping sparrow
   Mallard
2. American robin
   European starling

The European starling was first released into Central Park at the end of the 19th century. Since then, they have multiplied from a few handfuls of birds to over 50 million. Unfortunately, they have pushed several other species out of their nesting sites.

1. Mourning dove
   Blue ground dove
2. Collared dove
   Brown cuckoo dove

The mourning dove is one of the most common birds in North America. You can often hear them singing a "mourning" song early in the day. Some years, up to 70 million mourning doves are shot for game.

1. Red-winged blackbird
   Dark-eyed junco
2. American robin
   European starling

You can find the red-winged blackbird in swamps across North America. They like to spend their time fluttering between cattails. They're found as far north as Northern Canada and as far south as El Salvador.

1. Oilbird
   Hoatzin
2. Violet-crowned woodnymph
   Kookaburra

The oilbird has habits that more closely resemble a bat than a bird. They live in caves and use echolocation to find food. The bird gets its name from feasting on the fruit of the oil palm.

1. Kagu
   Kookaburra
2. Cockatiel
   Lady Gouldian finch

The hard nasal corns on the Kagu's nose are though to protect their nose from dust particles. Researcher think that mating pairs may continue to mate each year for their entire lives. They're only found on the small island of New Caledonia.

1. Kookaburra
   Crimson rosella
2. Turquoise-browed motmot
   Violet-crowned woodnymph

It's hard to miss the bright plumage of this tropical bird when you see it contrasting with the surrounding trees. It's so beautiful and widely recognized in Central America that El Salvador and Nicaragua both named it their national bird.

1. Ruby-throated hummingbird
   Violet-crowned woodnymph
2. Bee hummingbird
   Anna's hummingbird

The violet-crowned woodnympth grows to a maximum length of about 4 inches. You can find these hummingbirds throughout Guatemala and Belize. They use their long beaks to pull nectar from different types of flowers.

1. Lovebird
   Crimson rosella
2. Cockatiel
   Scarlet macaw

The crimson rosella is one of the most beautiful species of parrots in the world. They live primary along the eastern coast of Australia as well as New Zealand. You'll rarely see them outside of small pairs, and they often forage on the ground with their mate.

1. Red-bearded bee-eater
   Little bee-eater
2. White-throated bee-eater
   Swallow-tailed bee-eater

The red-throated bee-eater gets its name for its red breast. Also, as its name suggests, it eats primarily insects, including bees and hornets. They generally catch their prey by sitting motionless until it comes near them.

1. Kookaburra
   Common kingfisher
2. Oriental dwarf kingfisher
   Forest kingfisher

The kookaburra is a large bird in the kingfisher family that lives in Australia. Its name is an onomatopoeia for the high-pitched call that it makes. They're one of the only kingfisher species that don't spend their time around water.

1. European goldfinch
   Lady Gouldian finch
2. Atlantic canary
   American goldfinch

You might see these in your local pet store, but if you want to find them in the wild, you'll have to take a trip to Australia. It's thought that fewer than 2,500 of these birds still exist in the wild, and conservation efforts are being made to bring them back.

1. Blue-crowned pigeon
   Mourning dove
2. Eurasian collared dove
   European turtle dove

The face of the blue-crowned pigeon may look similar to the common pigeon you see around your local parks. However, this bird can grow to be the size of a turkey. You won't see a wild one unless you travel to the island of New Guinea.

1. Cockatoo
   Macaw
2. Kakapo
   Toucan

It's hard to mistake a toucan for any other bird thanks to its distinctive bill. They eat mostly fruit and insects, but they also consume lizards from time to time. There are more than 40 types of toucans that live in the jungles of South America.

1. North American Cardinal
   Red-necked tanager
2. Baltimore Oriole
   Kakapo

If you want to see the red-necked tanager, you'll have to travel to the rainforests in eastern South America. There are three different subspecies, which all have slightly different patterns in their throat feathers.

1. Wood stork
   Marabou stork
2. White stork
   Shoebill stork

This bird is one of the funniest looking birds in the stork family. Because of the way their bill curves upward, they have a permanently smiling expression. They use their bill to catch fish and reptiles.

1. Ribbon tailed astrapia
   Bird of paradise
2. Kakapo
   Eostrix

The ribbon tailed astrapia grows to lengths of about a foot long. They're most recognizable for their long tail. In fact, they have the largest tail-to-body ratio of any bird species. Can you guess what they use it for? To attract females, of course!

1. Eostrix
   Barn owl
2. Burrowing owls
   Great-horned owl

When you think of owls, you probably don't think of them living underground. However, burrowing owls live in dens like prairie dogs. They eat mostly prickly ears, mice and insects.

1. Ruby-throated hummingbird
   Buff-bellied Hummingbird
2. Scarlet hummingbird
   Scarlet i'iwi

Even though it may look like a hummingbird, the scarlet i'iwi is actually more related to finches. They are best known for their curved beak that they use to harvest nectar from Hawaiian flowers.

1. Rufous potoo
   Kakapo
2. Tawny frogmouth
   Hoatzin

The tawny frogmouth uses its large mouth to eat the local vermin in Australia like rats and lizards. They've been known to use rocks to beat up their prey to make them easier to eat.

1. Hoatzin
   Common magpie
2. Northern Mockingbird
   Catbird

The hoatzin may be pretty to look at, but you might not want to get too close. Because of the way they ferment their food after eating it, they release a skunk-like smell to ward off predators.

1. Golden pheasant
   Andean cock-of-the-rock
2. Magnificent frigatebird
   Vulturine guineafowl

Frigatebirds are in the same family as the blackbird. The magnificent frigatebird uses its red pouch to attract mates. The females lack the red sac of their male counterparts and instead have a white breast and belly.

1. Golden pheasant
   Jungle fowl
2. Bar-tailed pheasant
   Copper pheasant

The golden pheasant is one of the world's most distinctly colored birds. They rarely weigh more than about 1.2 pounds and spend most of their time foraging on insects, seeds and berries in Central and Southern China.

1. Tufted puffin
   Spectacled eider
2. Mandarin duck
   Bonaparte's gull

The spectacled eider gets its name for the distinct marking around its eyes that makes it look like it's wearing glasses. They eat mostly seafood and mollusks, but in the summer, they may forage on grass and berries.

1. Cassowary
   Ostrich
2. Vulturine guineafowl
   Emu

The vulturine guineafowl also goes by the name royal guineafowl and is native to Ethiopia and Kenya. Don't worry; it's not as intimidating as it looks. They eat mostly seeds, mice, insects and reptiles.

1. Atlantic puffin
   Great Auk
2. Common Cormorant
   Herring gull

There are three species of puffins in the world. They usually breed on the sides of large oceanside cliffs. The Atlantic puffin is the ocean type of puffin found on the east coast of Canada.

1. Baltimore oriole
   North American cardinal
2. American robin
   Common magpie

The North American cardinal is one of the most distinct birds found in the Western Hemisphere. Only the males have the bright red feathers that make them famous. The females are a dull brown.

1. California condor
   Philippine Eagle
2. Bald eagle
   Kakapo

This beautiful eagle found in the Philippines can grow up to 3.4 feet tall. There aren't many left in the wild. It's estimated that the number of breeding pairs in down to less than 300.

1. Kakapo
   Cockatoo
2. Macaw
   New Zealand parrot

The Kakapo is a critically endangered parrot that lives exclusively in New Zealand. They're completely flightless and ground dwelling, which makes them easy prey for introduced predators like dogs and cats.

1. American eagle
   Black vulture
2. Turkey vulture
   California condor

In the 1980s, there were only 21 condors left in the world. They were bred and slowly reintroduced into the wild. Nowadays, there are more than 200 of these giant birds with a nearly 10-foot wingspan in the wild.