Haematopus ostralegus chathamensis
E. J. O. Hartert, 1927,
Has frequently been considered a race of H. unicolor or of H. ostralegus; differentiation relatively weak, and species status perhaps questionable. Recent study of mtDNA, however, supported treatment as a separate species#R. Form H. ostralegus finschi has on occasion been associated with present species. Monotypic.
Chatham Is, E of New Zealand, where restricted to coasts of Chatham, Mangere, Rangatira (South-east I) and Pitt; occasionally at Star Keys#R.
Food and feeding
Status and conservation
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