flapping images - Joel Sartore

The critically-endangered orange-bellied parrot (Neophema chrysogaster) at the Healesville Wildlife Sanctuary. This is one of the rarest birds in the world with fewer than 50 left in the wild.

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BIR037-00150

The critically-endangered orange-bellied parrot (Neophema chrysogaster) at the Healesville Wildlife Sanctuary. This is one of the rarest birds in the world with fewer than 50 left in the wild.

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A buff-banded rail (Hypotaenidia philippensis australis) at Healesville Sanctuary.

Picture of a common waxbill (Estrilda astrild) from a private collection.

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A common waxbill (Estrilda astrild) from a private collection.

Picture of a long-billed corella (Cacatua tenuirostris) at the Healesville Sanctuary.

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BIR042-00086

A long-billed corella (Cacatua tenuirostris) at the Healesville Sanctuary.

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A flightless cormorant (Phalacrocorax harrisi) on Fernandina Island in Galapagos National Park. With only 1500 estimated individuals, it is one of the world’s rarest birds and is the subject of an active conservation program.

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Galapagos penguins (Spheniscus mendiculus) at Tagus Cove in Galapagos National Park.

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SCE051-00072

Flightless cormorant (Phalacrocorax harrisi) on Fernandina Island in Galapagos National Park. With only 1500 estimated individuals, it is one of the world’s rarest birds and is the subject of an active conservation program.

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Miss Sandy Hill, a federally endangered Mississippi sandhill crane (Grus canadensis pulla), at the Audubon Center for Research of Endangered Species. Only 110 of this sandhill crane subspecies exists in the wild. Only another 45 birds are in captivity.

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ESA001-00494

Miss Sandy Hill, a federally endangered Mississippi sandhill crane (Grus canadensis pulla), at the Audubon Center for Research of Endangered Species. Only 110 of this sandhill crane subspecies exists in the wild. Only another 45 birds are in captivity.