Daniel J. Field:
White-chinned Petrel (Procellaria aequinoctialis), off Cape Town, Western Cape, South Africa
Daniel J. Field:
Southern Giant Petrel (Macronectes giganteus), Western Cape, South Africa
Daniel J. Field:
Black-capped Petrel (Pterodroma hasitata), off Hatteras, North Carolina
Daniel J. Field:
Black-capped Petrel (Pterodroma hasitata), off Hatteras, North Carolina
Daniel J. Field:
Northern Fulmar (Fulmarus glacialis), off Westport, Washington
Daniel J. Field:
Thousands of Sooty Shearwaters (Ardenna grisea), off Westport, Washington
Daniel J. Field:
Short-tailed Shearwater (Ardenna tenuirostris), off Westport, Washington
Daniel J. Field:
Sooty Shearwater (Ardenna grisea), off Westport, Washington
Daniel J. Field:
Pink-footed Shearwater (Ardenna creatopus), off Westport, Washington
Daniel J. Field:
Pink-footed Shearwater (Ardenna creatopus), off Westport, Washington
Daniel J. Field:
Short-tailed Shearwater (Ardenna tenuirostris), off Westport, Washington
Daniel J. Field:
Pink-footed Shearwater (Ardenna creatopus), off Westport, Washington
Daniel J. Field:
Great Shearwater (Puffinus gravis), off Hatteras, North Carolina
Daniel J. Field:
Manx Shearwater (Puffinus puffinus), off Hatteras, North Carolina
Daniel J. Field:
Audubon's Shearwater (Puffinus lherminieri), off Hatteras, North Carolina
Daniel J. Field:
Great Shearwater (Puffinus gravis), off Hatteras, North Carolina
Daniel J. Field:
Cory's Shearwater (Calonectris borealis), off Hatteras, North Carolina
Daniel J. Field:
White-chinned Petrel (Procellaria aequinoctialis), off Cape Town, Western Cape, South Africa
Daniel J. Field:
Antarctic Prion (Pachyptila desolata), off Cape Town, Western Cape, South Africa
Daniel J. Field:
Southern Giant Petrel (Macronectes giganteus), comparison of light and dark morphs
Daniel J. Field:
Northern Fulmar (Fulmarus glacialis), near Akureyri, Iceland
Daniel J. Field:
Cape Petrel a.k.a. Pintado Petrel (Daption capense), off Simon's Town, Western Cape, South Africa
Daniel J. Field:
Cory's Shearwater (Calonectris borealis), off Hatteras, North Carolina
Daniel J. Field:
Great Shearwater (Ardenna gravis), off Hatteras, North Carolina
Daniel J. Field:
Northern Fulmar (Fulmarus glacialis), Bempton, Yorkshire, United Kingdom
Daniel J. Field:
Northern Fulmar (Fulmarus glacialis), Hunstanton, United Kingdom
Daniel J. Field:
Manx Shearwater (Puffinus puffinus), Madeira, Portugal
Daniel J. Field:
Cory's Shearwater (Calonectris diomedea), Madeira, Portugal
Daniel J. Field:
Cory's Shearwater (Calonectris diomedea), Madeira, Portugal