The ibis-billed sandpiper (scientific name: Ibidorhyncha struthersii) is 40 cm long, and the partridge has a black forehead, top of its head, face, chin and throat, and is contiguous with narrow white edges. The back of the neck, the sides of the neck, the front neck and the upper chest are bluish grey. The chest has a broad black horizontal band, and a narrower white band between the black band and the gray of the upper breast, and the rest of the lower body under the black band is white. The entire upper body such as the back and shoulders are grayish brown. The wing feathers are dark brown with white spots on the inside, and the base of the medial primary and outer secondary flight feathers are white, forming a large white spot on the wing. The inner flight feathers are greyish brown. Large and primary coverts are dark brown. The middle and small coverts are greyish brown. The wing margins are white. The upper coverts of the tail are dark brown , and the surface of the feathers is slightly stained gray. The tail feathers are smoky grey with narrow gray-black wavy transverse spots and broad black-brown secondary spots, and the outer tail is white with wide black transverse spots. Winter feathers are similar to summer feathers. But the face has a slightly unclear white feather tip. Iris red. The mouth is long and curved fairly downward, curved, and the color is bright red during the breeding season and dark red in other seasons. The feet are bright red during the breeding season and greyish-pink in other seasons. The young birds are embellished with green
Western Xinjiang, western, southern and eastern Tibet, Qinghai, Gansu, Sichuan, Ningxia, Shaanxi, Hebei, Henan and northern Yunnan. Lost birds found in Xishuangbanna (southern Yunnan)
Resident birds and migratory birds that migrate vertically. They often move and feed alone or in small groups of 3-5 on gravel beaches and on the beaches on both sides of the river. Sometimes they also wad into stomach-deep water, sticking their heads and necks into the water to feed. Sexual alertness, the slightest noise, that is, crouching still, until the danger is approaching, only to quickly walk away or take off to escape along the zigzag path between the gravel.
The breeding season is from May to July, and the breeding is in pairs. From the beginning of April to mid-April, the male begins to whine and chase the female. Pairs form at the end of April and the beginning of May, and nests begin in pairs. They usually nest on small islands between gravel on the banks of rivers or in mountain streams. The nest is very simple, mainly in a shallow pit between the gravel, without any bedding, or only some small cobblestone. 3-4 eggs are laid per clutch.