Haematopus unicolor
The Variable Oystercatcher (Haematopus unicolor) is a distinctive and highly polymorphic shorebird endemic to New Zealand's coasts. Ranging from 47-49 cm in length with a wingspan of 80-86 cm, it possesses a stout body, pinkish-red legs, and a striking, long, chisel-tipped orange-red bill used for prying open shellfish. Its most notable feature, giving it its name, is its variable plumage, which can be entirely glossy black (the 'black' morph), a mottled greyish-black and white (the 'smudgy' ...
Primarily coastal, inhabiting rocky shores, sandy beaches, intertidal flats, and estuaries. It is found at sea level along the entire New Zealand coastline.
Primarily carnivorous, feeding on marine invertebrates such as bivalves (mussels, cockles), gastropods (limpets), marine worms, and crustaceans (crabs). They forage extensively in the intertidal zone, using their specialized bill to open shellfish.
Variable Oystercatchers are diurnal foragers, active throughout the day, often resting in small groups on high ground during high tide. They are highly specialized predators, employing diverse foraging techniques including probing mud and sand for worms, hammering shells open with their powerful ...
The Variable Oystercatcher is entirely endemic to New Zealand, with its breeding and year-round range encompassing the North, South, and Stewart Islands, as well as several smaller offshore islands, notably including the Chatham Islands. It is found exclusively along the coastline, favoring a var...
Least Concern
- The "variable" in its name refers to its unique plumage, which can be all black, all black and white (pied), or a mix of both. - It is one of only two oystercatcher species endemic to New Zealand, the other being the Chatham Island Oystercatcher. - Their bright orange-red bill is not just for s...