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Side-by-Side Comparison

Attribute	Chatham Islands Oystercatcher	South Island Oystercatcher
Scientific Name	Haematopus chathamensis	Haematopus finschi
Order	Charadriiformes	Charadriiformes
Family	Haematopodidae	Haematopodidae
Conservation Status	Endangered	Least Concern
Length	—	—
Wingspan	50.4 cm (19.8 in)	50.4 cm (19.8 in)
Weight	580.0 g (20.46 oz)	534.25 g (18.85 oz)
Diet	--	--
Clutch Size	2-3	1-3
Population Trend	—	—

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Habitat Comparison

Shared Habitats

🏖️ Coastal

Chatham Islands Oystercatcher only

None

South Island Oystercatcher only

🌾 Grassland 🌿 Wetland

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

Conservation Status

Endangered

Chatham Islands Oystercatcher

Least Concern

South Island Oystercatcher

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

About These Birds

Chatham Islands Oystercatcher

Chatham Islands Oystercatcher (Haematopus chathamensis) is a large 47–49 cm oystercatcher endemic to the Chatham Islands, New Zealand. Black and white patterning; orange-red bill; pink legs. Critically Endangered; world population only ~440 birds. Inhabits rocky shores and sandy beaches on the Chatham Islands.

South Island Oystercatcher

South Island Oystercatcher (Haematopus finschi) is a large 44–49 cm oystercatcher endemic to New Zealand. Black above, white below; orange-red bill; pinkish legs. Breeds on braided riverbeds of South Island; winters on North Island and Stewart Island tidal flats. The only New Zealand oystercatcher that migrates between islands.

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