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Side-by-Side Comparison

คุณสมบัติ	California Gull	Black-tailed Gull
ชื่อวิทยาศาสตร์	Larus californicus	Larus crassirostris
อันดับ	Charadriiformes	Charadriiformes
วงศ์ตระกูล	Laridae	Laridae
สถานะการอนุรักษ์	Least Concern	Least Concern
ความยาว	—	—
กว้างปีก	75.4 cm (29.7 in)	72.8 cm (28.7 in)
น้ำหนัก	717.5 g (25.31 oz)	675.0 g (23.81 oz)
อาหาร	--	--
จำนวนไข่	2-4	2-3
Population Trend	—	—

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Habitat Comparison

ถิ่นที่อยู่อาศัยร่วมกัน

🏖️ Coastal

California Gull only

🌿 Wetland 🌾 Grassland

Black-tailed Gull only

ไม่มี

{# ════════════════════════════════════════════════════════════════════════ Song & Call Comparison ════════════════════════════════════════════════════════════════════════ #} {# ════════════════════════════════════════════════════════════════════════ Geographic Range & Migration ════════════════════════════════════════════════════════════════════════ #} {# ════════════════════════════════════════════════════════════════════════ Conservation Status Comparison ════════════════════════════════════════════════════════════════════════ #}

สถานะการอนุรักษ์

Least Concern

California Gull

Least Concern

Black-tailed Gull

{# ════════════════════════════════════════════════════════════════════════ Identification Tips — How to Tell Them Apart ════════════════════════════════════════════════════════════════════════ #} {# ════════════════════════════════════════════════════════════════════════ About Each Bird (Descriptions) ════════════════════════════════════════════════════════════════════════ #}

About These Birds

California Gull

California Gull, 46–55 cm, breeds at inland lakes of western North America and winters on the Pacific coast. Yellow bill with red and black spot, greenish-yellow legs. Omnivore; famous for saving Utah crickets crops in 1848 — commemorated as Utah's state bird. Strongly migratory.

Black-tailed Gull

Black-tailed Gull, 44–48 cm, is common on East Asian coasts from Russia to China, Japan, and Korea. Grey mantle, white body, yellow bill with red spot and black subterminal band, yellow legs. Omnivore; very vocal, known as the 'cat gull' for its mewing calls. Migratory; winters south to Vietnam.

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