Also known as: Harcourt's Petrel, Madeiran Storm-petrel
23 cm (9") Rare. Atlantic Ocean. Broad white band at base of tail or on rump. Square or slightly forked tail. Similar to Wilson's and Leach's storm-petrels but larger than Wilson's, more stout and darker than Leach's. Was called Harcourt's Petrel.
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Credit: gadflypetrel
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Credit: Dan Irizarry
Least Storm-Petrel
Fork-tailed Storm-Petrel
Leach's Storm-Petrel
Wedge-rumped Storm-Petrel
Black Storm-Petrel
Ashy Storm-Petrel
Wilson's Storm-Petrel