Heermann's Gull vs River Tern

Larus heermanni 比較対象 Sterna aurantia

Side-by-Side Comparison

属性 Heermann's Gull River Tern
学名 Larus heermanni Sterna aurantia
Charadriiformes Charadriiformes
Laridae Laridae
保全状況 Near Threatened Vulnerable
体長
翼開長 67.2 cm (26.5 in) 52.4 cm (20.6 in)
体重 448.26666666666665 g (15.81 oz) 187.5 g (6.61 oz)
食性 -- --
一腹卵数 1-2 3-4
Population Trend

Habitat Comparison

共通生息地

Heermann's Gull only

None

River Tern only

保全状況

Near Threatened

Heermann's Gull

Vulnerable

River Tern

About These Birds

Heermann's Gull

ヒアマンカモメはカリフォルニア沿岸と下バハ・カリフォルニアの島々に繁殖し、暗色の体と赤い嘴が特徴的なカモメである。

River Tern

River Tern, 38–43 cm, is a large freshwater tern of South and Southeast Asia, found along major rivers from Pakistan to Thailand. Yellow-orange bill, grey back, black cap in breeding plumage. Piscivore; plunge-dives into clear river water. Near Threatened due to river sand-mining and disturbance.

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