Gulls (Laridae)

Grey-headed Gull (Larus cirrocephalus) - HBW 3, p. 613

French: Mouette à tête grise German: Graukopfmöwe Spanish: Gaviota Cabecigrís
Other common names: Grey-hooded Gull

Taxonomy: Larus cirrocephalus Vieillot, 1818, Brazil.
Morphometric analysis links it with L. novaehollandiae and L. serranus. Two subspecies recognized.

Subspecies and Distribution:

  • cirrocephalus Vieillot, 1818 - coastal Ecuador and Peru; coastal C Brazil to Argentina (S Buenos Aires), and up Paraguay and Paraná basins inland to Santa Fé (Laguna de Melincué).
  • poiocephalus Swainson, 1837 - coasts and inland rivers of W Africa; widely scattered localities from Ethiopia to Malawi and S Africa, including Rift Valley lakes (Naivasha, Manyara, Elmenteita, Nakuru, Turkana).