Where Is The Tufted Duck Native To Where Can I Go On The Web To Identify Species Of Birds?

Where can I go on the web to identify species of birds? - where is the tufted duck native to

I've tried, but it was not really satisfied with other sites. I live in a small pond and beautiful in Bellingham WA. There are different types of ducks, geese, herons and eagles named Bob, and a variety of pics! But as I looked at the pond almost every day, I wanted to know who he is. I have a bird book, but it is a duck pond that is not in him. Where can I describe, and ask to search for photos, and actually someone? Or better yet, if one of the ornithologists, perhaps you can help me. It is a medium-sized duck with black back, white everywhere except the head, deforming and even in black. The head is also the flag. Males have a white ring around half of its Beeks. The females are brown. The babies are all brown and DowNY. Please help me or send me photos when I can this family are identified. Thank you.