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Side-by-Side Comparison

คุณสมบัติ	Chatham Islands Shag	Double-crested Cormorant
ชื่อวิทยาศาสตร์	Leucocarbo onslowi	Nannopterum auritum
อันดับ	Suliformes	Suliformes
วงศ์ตระกูล	Phalacrocoracidae	Phalacrocoracidae
สถานะการอนุรักษ์	Critically Endangered	Least Concern
ความยาว	—	—
กว้างปีก	51.8 cm (20.4 in)	—
น้ำหนัก	2095.0 g (73.90 oz)	1936.0 g (68.29 oz)
อาหาร	--	--
จำนวนไข่	3	3-4
Population Trend	—	—

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Habitat Comparison

ถิ่นที่อยู่อาศัยร่วมกัน

🏖️ Coastal

Chatham Islands Shag only

ไม่มี

Double-crested Cormorant only

🌿 Wetland

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สถานะการอนุรักษ์

Critically Endangered

Chatham Islands Shag

Least Concern

Double-crested Cormorant

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

About These Birds

Chatham Islands Shag

63 cm. Black and white; orange-red caruncles at bill base. Endemic to Chatham Islands, New Zealand. Critically Endangered; total population fewer than 1,000 birds. Restricted to a few Chatham Islands colonies; feeds on fish and invertebrates in surrounding coastal waters.

Double-crested Cormorant

70–90 cm, wingspan 114–123 cm. Dark with two small orange ear tufts in breeding; orange-yellow facial skin. Widespread across North America and Central America. Highly adaptable; colonial nester. Controversial where it competes with commercial fisheries; feeds almost exclusively on fish.

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