Hawaiian petrel Hawaiian petrel The Hawaiian petrel or uau ("Pterodroma sandwichensis") is a large, dark grey-brown and white petrel that is endemic to Hawaii. The Hawaiian petrel was formerly found on all the main Hawaiian Islands except Niihau, but today it is mostly restricted to Haleakalā crater on Maui; smaller populations exist on Mauna Loa on the island of Hawaii, Waimea Canyon on the island of Kauai, Lānaihale on Lānai, and possibly Molokai. It is also reportedly seen on the Galapagos Islands. Their diet consists of 50–75% squid, and smaller percentages of fish and crustaceans. The birds nest in burrows or rock
Ancient Hawaiian population increased within the local community with the formation of ali'i and maka'ainana classes. The significant reduction of population in the 16-17th century was a result of warfare and conquest among competing chiefs as well as the rise of Aikāne (homosexual) relations. Liloa originated the practice of "moe āikane", the sexual relationship between males in the late 15th century. Ancient Hawaiian population The exact population of the Hawaiian Islands at the time of Captain James Cook's arrival is not known. What is known is that the first voyaging canoes that landed on Hawaiian shores during the discovery and settlement of Hawaii