Heermann's Gull
NameHeermann's Gull
Common NameHeermann's Gull
Scientific NameLarus heermanni
FamilyLaridae
Wingspan (cm)129
Length (cm)50
Weight (g)450
Plumage DetailsAdult breeding plumage features a striking white head, dark gray body, and blackish wings with a narrow white trailing edge. The tail is dark with a prominent white tip. The bill is bright red with a black tip, and the legs are black. Non-breeding adults have a streaked gray head, while juveniles are uniformly dark brown/gray.
Vocalization / CallVocalizations include deep, guttural 'kwa-kwa-kwa' or 'kree-kree' calls, as well as various squawks and growls, often given in flight or at colonies.
Primary Dietpiscivore
Primary Habitatscoastal, wetland, urban
Conservation Statusnear-threatened
Geographic RangeBreeds almost exclusively on Isla Rasa in the Gulf of California, Mexico, with smaller colonies on other islands. After breeding, they disperse widely along the Pacific coast of North America, ranging from British Columbia, Canada, south through the western United States and Mexico, and occasionally as far south as Guatemala.
Identifying FeaturesWhite head (breeding adult), Dark gray body, Bright red bill with black tip, Dark legs, Dark wings with white trailing edge, Dark tail with white tip
Description
The Heermann's Gull is a medium-sized gull with a distinctive appearance, particularly during breeding season. It is known for its dark body, white head, and bright red bill with a black tip. These gulls are primarily piscivorous, often plunge-diving for fish along coastal waters.
