Facts about Chatham Island oystercatcher

Chatham Island oystercatcher, at nest

Ecology and habitat

Lifespan: The Chatham Island oystercatcher lives for an average of 7.7 years.

Size: Adults measure about 48cm.

Diet: Marine molluscs, worms, and other invertebrates.

Habitat: Nests are usually built in 'scrapes' on sandy and rocky shores clear of the waterline. Oystercatchers also breed amidst low vegetation.

Population and range

Breeding pairs are found on South East Island, Pitt Island, Mangere Island, and Chatham Island.

In December 2004 the oystercatcher population included 88 breeding pairs and a total of 311 birds. This is more than double the number of birds counted in 1998, when the intensive management programme began.