French: Macareux rhinocéros German: Nashornalk Spanish: Alca unicórnea
Cape St Elias, Alaska, USA
SE Russia (Akademii Gulf), S Sakhalin I and S Kuril Is to Japan (Teuri I) and perhaps extreme NE Korea; C Aleutians; S & SE Alaska (W to Barren I, Middleton I, St Lazaria I, Forrester I) S to British Columbia (Triangle I), W Washington (Destruction I) and California (Castle I, Farallon Is, Channel Is). Winters mostly offshore and along coasts, in Asia near breeding areas, and in North America mainly from S British Columbia (casually from SE Alaska) S to Baja California (Santa Margarita I).
35–38 cm; c. 533 g; wingspan 56–63 cm. Yellowish-orange bill, with short, vertical whitish knob or “horn” at base of maxilla; darkish brown head with... read more
Generally silent at sea. Near breeding colonies at night utters very low-pitched growling or mooing... read more
Marine offshore and along sea coasts and islands. Breeds on maritime and inland grassy slopes,... read more
Food and feeding
Mostly fish throughout year, supplemented in winter by small amounts of invertebrates (squid, euphausiids and other crustaceans); generally... read more
Arrival at colony normally late Mar and early Apr, slightly later in N; laying from end of Apr to mid Jun, with fledging mostly late... read more
Winters mostly offshore, sometimes near-shore and coastal, usually within breeding range. Southern... read more
Status and conservation
Not globally threatened (Least Concern). Total breeding population estimated at 1,250,000 birds, with c. 347,000 (300,000–400,000) in Asia and c. 903,000 (800,000... read more
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