First of all, Whatbird aims to be as comprehensive and accurate as possible. This is made possible by itsparametric step-by-step approach. Secondly, Whatbird maintains a constantly-updated database of bird sightings from across North America. This makes it the go-to site for bird identification information. Finally, Whatbird offers a number of features not found on other sites, such as: detailed illustrations of each species' plumage; information on where to find certain birds in North America; and news updates on newly-recorded sightings. In short, if you are looking for information on North American birds, then Whatbird is your best bet.