FEA’S PETREL Pterodroma feae

FEA’S PETREL Pterodroma feae

Cape Verde Petrel, Gon-gon
L 36–37 cm, WS 92–95 cm.

IDENTIFICATION 

One of only two Pterodroma (gadfly) petrels breeding in our region. A compact petrel, recalling Manx and Yelkouan Shearwaters in size, with rapid, impetuous, flight action typical of the genus, several rapid wingbeats to gain height being followed by fast downward glide on slightly flexed and bowed wings, frequently making very high bounding arcs into the air in windier conditions (but flight over land to inland breeding sites consists of steady wingbeats). Only occasionally follows ships. 

Species distinguished from similar-looking shearwaters (especially Cory’s, Manx and Yelkouan) by more compact, thicker-set (bullet-shaped) look to head and body, shorter, thicker bill, narrower, more sharply pointed and angled wings, and distinctive flight action (see above). Also differs from all shearwaters and all vagrant Pterodroma petrels of region except Softplumaged by combination of gleaming white underbody contrasting markedly with dusky-grey underwing (which often looks blackish in strong light). While whitish areas across centre and leading edge of underwing are often not obvious in the field, the dark M-shaped band across the upperwing is sometimes quite apparent, recalling Cory’s Shearwater. Lacks complete (or virtually complete) dark breast band typical of Soft-plumaged Petrel (q.v.), but individuals often have a grey smudge extending down either side of breast (and these can look quite dark at times). See also very similar Zino’s Petrel.

VOICE 

At breeding sites gives a long, mournful wail, recalling Tawny Owl, ending in a hiccup (latter audible only at close range). Sometimes gives a whimpering cry and a continuous cackling ‘gon-gon’. Silent at sea. 

TAXONOMY 

Until recently treated as a race of Softplumaged Petrel P. mollis.

STATUS/HABITAT 

Generally rare, but not uncommon around breeding sites. (may also breed Azores.) Breeds on cliffs and crags, often well inland. Pelagic, normally coming inshore only close to breeding sites.