On Earth, there are about 10,000 species of birds. Feathered demonstrate a variety of colors and patterns of plumage, there are different shapes and sizes, from tiny hummingbirds to hefty ostriches.
Small birds were more easily opposed by earthly attraction. Big birds used other advantages of ecological niches, exchanged the ability to fly for huge body size.
Countless species of birds, large and small, appeared and disappeared for millennia. Megafauna attracts attention, some impressively large birds have retained wings, but they are rudimentary and serve only for the balance when running.
Cleaning eagle
Combat Eagle
Wencenoid eagle
Whiteheaded eagle
Whitefingered Orlan
Golden eagle
South American Harpy
Whiteheaded SIP
Droof ordinary
Japanese crane
Black vulture
Snow vulture (kumai)
Curly pelican
Pink pelican
Swan-ship
Albatross
Imperial penguin
CAZAAR helmosome
Emu
Nandu
Other big birds
African ostrich
California Condor
Andian Condor
Homemade turkey
Conclusion
When they talk about the size, the “big” sounds vague. Determine the size in several ways, one of them is weighing. Big animals have large body weight. Birds are usually lungs, because anatomical features reduce weight so that climbing into the air becomes possible and effective. There are restrictions on how much flying bird weighs. Heavy views do not fly.
Wingspan is another way to measure the size. The shape and wingspan of the wings determine how the bird flies. Some wings provide speed and maneuverability, other sliding. Big birds with long narrow wings soar in the air.
