The Variable Oyster Catcher or Torea-pango (Haematopus unicolor) has forms that can be all black, or have white areas on the ventral surface.
It is a wading species of the family Haematopodidae. It is also endemic to New Zealand. It is a common species and not threatened.
These juveniles were on a beach at Waiheke Island. I used a kayak to drift close to their position.
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