Scientific name: Anser erythropus (Linnaeus, 1758)
Bird group: Geese
Field characters. 53-66 cm. Smaller, shorter-necked, and shorter-billed than White-fronted Goose, with considerably larger white front reaching onto top of head. Body and rest of head uniform dusky brown; underparts with delicate banding and with few black blotches on belly and lower flanks. Small bill bright pink, with white nail; legs and feet orange; swollen yellow ring around eye visible at short distance. Closed wings extend beyond tail. Juvenile without white front and without black bars on underparts.
Voice. Call a bisyllabic or trisyllabic note, higher-pitched and squeakier than White-front, sounding like "ku-you".
Distribution. Low-arctic, rare and endangered breeding bird.
Habitat. Nests among dwarf shrubs, rough grasses, or patches of stones along fringe of wooded tundra, on slopes near streams, or in mountain foothills. Outside breeding season in same type of localities as White-fronted Goose.
Food. In winter quarters, feeds on leaves, shoots, and stems of grasses and green plants. Data for breeding area scarce.
Eggs. Unmarked; ground colour light yellowish- white, becoming blotched ochre during incubation. Texture slightly glossy. Shape subelliptical/long subelliptical. Size 76 x 49 mm (69-85 x 43-52), weight 104 g (82-125) for eggs laid in captivity.