The whooping crane is the tallest North American bird and one of the rarest cranes in the world, with only about 800 individuals in the wild and captivity. It is listed as endangered by the IUCN and protected by law in the US and Canada.
The Siberian crane is the third-rarest crane in the world, with only about 4,000 individuals in two isolated populations in Russia and China. It is listed as critically endangered by the IUCN and faces threats from habitat loss, hunting, and climate change.
The red-crowned crane is the second-largest and second-rarest crane in the world, with only about 3,000 individuals in the wild and captivity. It is listed as endangered by the IUCN and revered as a symbol of longevity and fidelity in East Asia.
The black crowned crane is one of the two species of crowned cranes, which are the only cranes that can roost in trees. It is listed as endangered by the IUCN and has a declining population due to habitat loss, human disturbance, and illegal trade.
The sarus crane is the tallest flying bird in the world, reaching up to 1.8 m in height. It is listed as vulnerable by the IUCN and has a fragmented distribution across South and Southeast Asia and Australia.