Lesser Scaup

Walked around the ponds at the library today and saw lots of ducks and geese. I choose this photo of the lesser scaup because I didn't know what it was before today. There were several ducks that are black and white there today. I didn't know what they were until I came home and looked at my photos and compared them to the Aubudon Society Field Guide. The female, according to the guide, doesn't look anything like the male. She is brown with a whitish patch by her bill. I didn't see any females.....I don't think...at least I didn't get a photo of any.  I usually don't know the names of the ducks.....but I hope I can remember all that I learned today.