Hydrobates monteiroi
The Monteiro's Storm Petrel (Hydrobates monteiroi) is a diminutive and enigmatic seabird, measuring approximately 19-20 cm in length with a wingspan of 45-48 cm and weighing 35-45g. Its plumage is uniformly sooty brown across the body and underwings, strikingly contrasted by a prominent, pure white rump patch that is a key identification feature. Its long legs extend slightly beyond its slightly forked tail in flight, giving it a distinctive 'walking on water' appearance during foraging. Taxo...
Primarily a pelagic species, spending most of its life over the open North Atlantic Ocean. It returns exclusively to rocky island coasts and remote islets in the Azores for breeding, nesting in crevices and rockfalls at various elevations above sea level.
Feeds primarily on small surface-dwelling fish, crustaceans, squid larvae, and zooplankton. It often forages by gleaning prey from the water's surface, sometimes associating with larger marine predators like tuna or cetaceans to exploit disturbed food sources.
Monteiro's Storm Petrel exhibits strictly nocturnal activity at its breeding colonies, a crucial adaptation to avoid predation by gulls and other aerial predators. During the day, it forages solitarily or in loose aggregations across the open ocean, performing a characteristic 'pattering' flight ...
The Monteiro's Storm Petrel has an exceptionally restricted breeding range, being entirely endemic to the Azores archipelago in the North Atlantic Ocean. Its primary breeding stronghold is Graciosa Island, with smaller, often isolated colonies confirmed on Corvo, Flores, São Jorge, Faial, Pico, S...
Vulnerable
- The Monteiro's Storm Petrel was only described as a distinct species in 2008, making it a relatively recent discovery for ornithology. - It is endemic to the Azores archipelago, meaning it breeds nowhere else on Earth. - Unlike many birds, it is strictly nocturnal when on its breeding colonies,...