Petrels Photo Index

Cook's Petrel Pterodroma cookii
(or possibly Pycroft's Petrel Pterodroma pycrofti)


Cook's Petrel, New Zealand, March 2007


 Hauraki Gulf, New Zealand, March 2007


Cook's Petrel Pterodroma cookii and Pycroft's Petrel Pterodroma pycrofti both occur in the Hauraki Gulf and can be very difficult to distinguish. Cook's is shorter-tailed and longer-billed than Pycroft's and has a less prominent eye-patch. The partial shawl on this individual appears rather intermediate between the extent traditionally associated with each species (Pycroft's showing a distinct shawl and Cook's supposedly lacking one).

A. R. Dean

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