The eagles are the largest members of the raptor family. In North America we have at least four types of eagles, the Bald Eagle and the Golden Eagle are residents of the continent. Both of these birds share the same areas into the far north in the warmer seasons and down to the southern states and Mexico in the winter months. The eagles were listed as endangered birds but with the aid and protection given to them, they are once again becoming a common sight.
Two other eagles are visitors from Asia and Eurasia and find their way to North America through the Aleutian Islands. They are the Steller's Sea-Eagle and the White-tailed Eagle, also known as the "Gray Sea-Eagle". These large Asian birds of prey have most often been seen in the western regions of Alaska's mainland, islands in the Bering Sea, and out on the Aleutian Islands.
Avibase - the world bird database This site provides the user with a complete list of bird species, broken down per country, or in the example of the US or Canada, per state and province. Here, bird species names are available in other languages, a great asset to be used as a translation of foreign bird names.
ABA - American Birding Association This site represents an organization that maintains official records of all birds species that have been proven to have been seen inside the perimeters of the North American Continent and the surrounding bodies of water. Regular revised versions are posted to keep the bird list current at all times. This is the list used by all serious birders over their lifetime. You may be aware of the movie called the "Big Year". It was with this list that all the competing birders used in an attempt to set a new record as to how many bird species that could be seen by an individual birder in one calendar year.
I hope you will take advantage of these suggested websites. I have used each of them, in one way or another, throughout the years in my quest to better identify and understand our fine feathered friends.