I had no idea what this species was. I have a Birds of Iowa field guide, but the Green Backed Heron isn't in there. They apparently breed in Iowa, but are not year long residents. I am probably going to have to find a better bird book, I used to have a copy Roger Tory Petersons Guide to Eastern United States. That book was great and I may have to purchase another copy. Thanks to Dennis Hill for knowing who to ask in making the id.
