Cape Verde, Colombia, Costa Rica, Ecuador, Equatorial Guinea, Japan, Kiribati, Marshall Islands (NB), Mauritania, Mexico, Morocco, Northern Mariana Islands (NB), Portugal (B) (NB), Sâo Tomé e Principe, Senegal, Spain (NB) (P), St Helena (B), USA (NB).
Vagrant to Antigua And Barbuda, Canada, Cuba, France, Ghana, Ireland, Israel, Russia (Asian), Sierra Leone, United Kingdom.
Eastern Atlantic from Berlengas Is (off central Portugal) and Azores south to Ascension I and St Helena. Also in Pacific, off eastern Japan, on Kauai (Hawaii) and at Galapagos.
 
Population
Estimated population is 150000 (2013) and decreasing.
Voice
Highly vocal around colonies, a squeaky 'chiwee' and a repeated, deep purring 'kuwa kuwa gvurururu' or 'kerr wheecha wheecha wheecha wheecha wheeeechuh'.
Band-rumped Storm Petrel (Hydrobates castro) [XC473563]
by Niklas Holmstrom from Monte Carmo, Sao Tome, Sao Tome (flight call)
Band-rumped Storm Petrel (Hydrobates castro) [XC510711]
by Oriol Baena from Praia, A\u00e7ores, Portugal (song)
Subspecies
Oceanodroma castro (Sibley and Monroe 1990, 1993) has been split into Band-rumped Storm-Petrel (Hydrobates castro) and Monteiro's Storm-Petrel (Hydrobates monteiroi) following Bolton et al. (2008).
Four birds caught at sea in Gulf of Guinea noticeably larger with less white on rump, might belong to undescribed subspecies.