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🧬 Biological Classification (Kingdom to Species)Haematopus ostralegus

Kingdom

Animalia

Phylum

Chordata

Class

Aves

Order

Charadriiformes

Family

Haematopodidae

Genus

Haematopus

Species

Haematopus ostralegus

Aves🥩 Carnivore

Eurasian Oystercatcher

Haematopus ostralegus (Eurasian Oystercatcher · ミヤコドリ)

🛡️ Conservation Status (IUCN Red List)NT (Near Threatened)

DDData Deficient

LCLeast Concern

NTNear Threatened

VUVulnerable

ENEndangered

CRCritically End.

EWExtinct in Wild

EXExtinct

🇰🇷 Class II endangered wildlife (Korea) · Natural Monument (Korea) «Eurasian Oystercatcher»

Geological Era

Extant

Diet

Carnivore

Length · Height

40~45cm · No data

Mass · Top Speed

546g · No data

Habitat & Fossil Locality

Coasts, tidal flats, estuaries, and inland watersides (breeds from Iceland and Europe to East Asia)

💡 Everyday Comparisons for Size, Mass & Speed

💡 Its weight of about 0.55 kg is roughly 1.3 times the weight of a soccer ball (about 0.43 kg) (Comparison).
💡 Its body length of about 45 cm is slightly more than half the length of a baseball bat (about 84 cm) (Comparison).
💡 In the United Kingdom, it has even been reported nesting in parking lots and on city rooftops.

Reference standards: coach bus ~12 m, mid-size car ~4.9 m, compact car ~1 t, basketball hoop 3.05 m, credit card 8.56 cm.

📊 Mass & Speed Index (0–100)

⚖️ Mass Index (Blue Whale ~190 t = 100, log scale)33

Site-computed relative index from recorded values; not a formal scientific metric.

#검은머리물떼새#Haematopus ostralegus

📖 1. Overview

The Eurasian Oystercatcher is a large shorebird living along coasts and estuaries, breeding widely from Iceland and Europe to East Asia. It is listed as Near Threatened (NT) by the IUCN, with a declining population.

🦴 2. Anatomy & Morphology

It is a stocky shorebird measuring 40–45 cm in body length, using its strong bill to pry open or hammer apart bivalve shells.

🔍 3. Ecology & Behavior

It mainly eats bivalves, and in The Wash in the United Kingdom it relies heavily on cockles and mussels in winter. In the United Kingdom, inland breeding sites have increased in addition to coasts, so it is also seen in parking lots and on city rooftops.

🇰🇷 4. Connection to Korea

In Korea, it is a Class II endangered wildlife species (Korea) and was designated as a Natural Monument (Korea) on November 16, 1982. The Hong Kong Bird Watching Society notes that the East Asian subspecies also breeds on the Korean Peninsula.