Class Aves
Order Ciconiformes
Family Laridae

Under the Monroe and Sibley system, the Laridae are a large family of sea birds. SubFamilies are:
Larinae (gulls, turns, skimmers, skuas and jaegers)
Alcinae (auklets and murrelets)

I wish I could tell you more, but the whole science of Biology is in a disgusting state of disrepair. If you can find more information, please post it! You are more than welcome to assimilate my writeup into yours.