Black-billed Gull vs Heermann's Gull

Larus bulleri comparado com Larus heermanni

Side-by-Side Comparison

Atributo Black-billed Gull Heermann's Gull
Nome científico Larus bulleri Larus heermanni
Ordem Charadriiformes Charadriiformes
Família Laridae Laridae
Estado de conservação Near Threatened Near Threatened
Comprimento
Envergadura 57,5 cm (22.6 in) 67,2 cm (26.5 in)
Peso 216,83333333333334 g (7.65 oz) 448,26666666666665 g (15.81 oz)
Dieta -- --
Tamanho da postura 1-3 1-2
Population Trend

Habitat Comparison

Habitats partilhados

Black-billed Gull only

Heermann's Gull only

Nenhum

Estado de conservação

Near Threatened

Black-billed Gull

Near Threatened

Heermann's Gull

About These Birds

Black-billed Gull

Black-billed Gull, 35–38 cm, is endemic to New Zealand, breeding on South Island braided riverbeds. All-white plumage with a slender black bill and black-tipped wings. Endangered; river modification and mammal predation depress breeding success. Insectivore and piscivore in river and coastal habitats.

Heermann's Gull

A gaivota-de-heermann é uma gaivota distinta da costa do Pacífico com cabeça branca e corpo cinzento-escuro, encontrada principalmente da Baja California ao Oregon.

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