Pterodroma inexpectata
The Mottled Petrel, Pterodroma inexpectata, is a striking medium-sized seabird, a member of the gadfly petrel genus known for its swift, erratic flight. Adults measure approximately 33-36 cm (13-14 inches) in length with a wingspan of 82-92 cm (32-36 inches) and weigh between 300-450 grams (10.6-15.9 oz). Its plumage is characterized by a dark sooty-brown dorsal side, a contrasting white belly mottled with dark streaks, and a distinctive dark 'M' pattern across its upperwings, particularly vi...
This highly pelagic species spends the vast majority of its life over open ocean, coming ashore only to breed on remote, predator-free islands, typically burrowing into steep, forested slopes or tussock grasslands.
Their diet primarily consists of squid, small fish, and crustaceans, which they catch by surface-seizing, shallow pursuit-diving, and scavenging behind fishing vessels.
Mottled Petrels are masters of the open ocean, exhibiting a dynamic daily rhythm. At sea, they are largely diurnal, often seen in small to large flocks, especially around fishing vessels or areas of upwelling. Their foraging strategy involves surface-seizing, shallow pursuit-diving, and occasiona...
The Mottled Petrel has a vast trans-equatorial distribution. Its primary breeding grounds are confined to remote, predator-free islands of New Zealand and its subantarctic territories, notably the Snares Islands, Antipodes Islands, and Chatham Islands. After breeding, adults and fledglings undert...
Least Concern
- The Mottled Petrel undertakes one of the longest trans-equatorial migrations of any seabird, traveling from its New Zealand breeding grounds to the North Pacific for the non-breeding season. - They are capable of diving to depths of at least 3 meters (10 feet) in pursuit of prey, showcasing imp...