Genus: Bulweria (petrels) - Wiki
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Species: Bulweria bulwerii, Bulweria fallax
[Photo] Bulwer's Petrel, Bulweria bulwerii; This Bulwer's Petrel was scurrying around in rocks near the coastguard landfill. Tern Island, Northwestern Hawaiian Islands. Source: Flickr (www.flickr.com/photos/angrysunbird/1344198011/). Date: September 5, 2006. Author: angrysunbird (www.flickr.com/photos/angrysunbird/).
Bulweria is a genus of seabirds in the family Procellariidae. The genus has two living species, Bulwer's Petrel (Bulweria bulwerii) and Jouanin's Petrel (Bulweria fallax). A third species, the St Helena Bulwer's Petrel, (Bulweria bifax) beame extinct in the early 16th century; it is known only from skeletal remains.
Bulweria petrels have long been considered related to the gadfly petrels in the genus Pterodroma, but recent mtDNA cytochrome b sequence analysis has proven them to be closely related to the shearwaters in the genus Puffinus and especially the Procellaria petrels (Bretagnolle et al., 1998).
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