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Side-by-Side Comparison

คุณสมบัติ	Boat-billed Heron	Ascension Night-heron
ชื่อวิทยาศาสตร์	Cochlearius cochlearius	Nycticorax olsoni
อันดับ	Pelecaniformes	Pelecaniformes
วงศ์ตระกูล	Ardeidae	Ardeidae
สถานะการอนุรักษ์	Least Concern	Not Evaluated
ความยาว	—	—
กว้างปีก	52.9 cm (20.8 in)	—
น้ำหนัก	644.0 g (22.72 oz)	624.57 g (22.03 oz)
อาหาร	--	--
จำนวนไข่	1-4	--
Population Trend	—	—

{# ════════════════════════════════════════════════════════════════════════ Visual Size Comparison ════════════════════════════════════════════════════════════════════════ #} {# ════════════════════════════════════════════════════════════════════════ Habitat Comparison ════════════════════════════════════════════════════════════════════════ #}

Habitat Comparison

ถิ่นที่อยู่อาศัยร่วมกัน

🏖️ Coastal

Boat-billed Heron only

🌲 Forest 🌿 Wetland

Ascension Night-heron only

ไม่มี

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สถานะการอนุรักษ์

Least Concern

Boat-billed Heron

Not Evaluated

Ascension Night-heron

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

About These Birds

Boat-billed Heron

The Boat-billed Heron (Cochlearius cochlearius) is one of the most morphologically distinctive members of the family Ardeidae, so unusual in appearance that it was formerly placed in its own monotypic family, Cochleariidae. The feature that immediately sets this species apart is its extraordinarily broad, flat, scoop-shaped bill, which is wider than it is long and resembles an upturned boat hull — a structure unlike any other heron bill. Adults have a black cap and crest, pale gray to white breast …

Ascension Night-heron

The Ascension Night-heron was a flightless heron known from subfossil remains on Ascension Island in the South Atlantic. Weighing an estimated 624g, it was likely driven to extinction by human activity and introduced predators. It is currently listed as Not Evaluated by conservation assessments.

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