The Marquesan imperial pigeon (Ducula galeata), also known as the Nukuhiva pigeon or Upe, is a pigeon which is endemic to Nuku Hiva in the Marquesas Islands of French Polynesia. This pigeon is only found in some valleys in the western part of that island.
This is the largest pigeon outside of the crowned pigeons, as it weighs approximately 900 grams (2 lb). Females, at 50 to 53.5 cm (19.7 to 21.1 in) long, are slightly smaller than males, at 55 cm (22 in) in length. Among standard measurements, the wing chord is 27.8–32.1 cm (10.9–12.6 in), the tail is 18.1–23.1 cm (7.1–9.1 in), the bill is 1.9–2.7 cm (0.75–1.06 in) and the tarsus is 3.9–4.6 cm (1.5–1.8 in). This species is heavily built with a large bill and long, broad tail. The wings are broad and rounded in shape.
The Marquesan imperial pigeon is sooty-gray on the head, throat and breast, with a white band just behind the bill that can be seen from some distance. The belly is slightly browner in color than the rest of the underside. The upperparts, wings and tail are glossy green with a bluish tint. The underside of both the tail and the wings are black. The bill is black, with a swollen cere that gives the face a unique sloping look just above the bill.
This bird has an cooing advertising call that consist of a loud, deep, guttural 'neah-ah, neah-ah, neah-ah, neah-ah or naw-aw, naw-naw or uh-wah, uh-wah, uh-wah. This call is so deep in timber that it is comes described as cow-like. A call, probably consisting of an excitement call, has been described as a crow-like krawk, krawk
This bird has an cooing advertising call that consist of a loud, deep, guttural 'neah-ah, neah-ah, neah-ah, neah-ah or naw-aw, naw-naw or uh-wah, uh-wah, uh-wah. This call is so deep in timber that it is comes described as cow-like. A call, probably consisting of an excitement call, has been described as a crow-like krawk, krawk