High Quality Content by WIKIPEDIA articles! The Black-necked Crane, Grus nigricollis also known as Tibetan Crane is a large bird and medium-sized crane, at 139 cm (55 in) long, 235 cm (7.8 ft) wingspan and 5.5 kg (12 lbs). It is whitish-gray crane with a black head, red crown patch, black upper neck and legs, and white patch to the rear of the eye. It has black primaries and secondaries. Both sexes are similar.