The red-necked crane ( scientific name : sarus crane ) is a large wader that differentiates into 3 subspecies. The posterior toes are small and high, cannot be held against the front three toes, and therefore cannot perch on trees; The plumage is roughly pale grey , and the adult has exposed red skin on its neck. The primary and primary coverts are black , and the white and slender inner flight feathers cover the tail vertically. The red-necked crane is a resident bird that inhabits open plain meadows, swamps, lakeside shoals, and swamps at the edge of forests, sometimes in farmland.
The species is classified as vulnerable because it is suspected of suffering a rapid decline in numbers, which is expected to continue. Wetland habitats, the extent of the impact of hunting and pollutants, and the general decline in environmental quality have all led to a decline in the species.
Overhunting: Indiscriminate hunting has led to a decline in the number of this species and is on the verge of extinction. The breeding season is from May to August, and the nesting is in open plain meadows and swamps with sparse trees or shrubs. The nest is made up of dead branches and grasses, laying 2 eggs per clutch, 1 occasionally, and the eggs are milky white and covered with brown spots.
It is found in Australia, Cambodia, China, India, Lao People's Democratic Republic, Myanmar, Nepal, Pakistan and Vietnam.
Nesting swampy wetlands are reclaimed as farmland, tropical rainforests and monsoon rainforests in the low mountainous areas near the Tianba area are cut down, and economic trees and crops such as rubber are planted, causing them to lose their habitat; overhurriding: indiscriminate hunting has led to a decline in the number of this species and is on the verge of extinction.
There are only about 20,000 wild red-necked cranes. There are fewer than 10,000 Indian groups: they have appeared in Pakistan but have been extinct since the late 1980s and are generally declining. There are more than 5,000 Australian populations and there is a trend of increase. Subspecies in Southeast Asia have declined significantly due to wars and habitat changes, and by the mid-20th century they have mostly disappeared from their habitats, with only 1,500-2,000 still living in scattered groups. The Filipino community became extinct in the late 1960s.