Doug Greenberg: Night heron
Doug Greenberg: I'm pretty coot!
Doug Greenberg: Just hangin' out
Doug Greenberg: Can't you see I'm trying to nap?
Doug Greenberg: Greater scaup
Doug Greenberg: Canvasback
Doug Greenberg: The thinker
Doug Greenberg: I spy with my little eye
Doug Greenberg: Synchronized swimmers
Doug Greenberg: An Eared grebe in full
Doug Greenberg: Ringnecked duck
Doug Greenberg: Your basic Mallard
Doug Greenberg: Oakland Street Urchin
Doug Greenberg: Sunday morning in the park
Doug Greenberg: Barrow's goldeneye
Doug Greenberg: Male bufflehead
Doug Greenberg: Strange hybrid duck!
Doug Greenberg: You don't see this guy every day!
Doug Greenberg: Pied-billed grebe
Doug Greenberg: Pied-billed grebe
Doug Greenberg: Mr. Barrow's goldeneye
Doug Greenberg: Ramming speed!
Doug Greenberg: My winter love
Doug Greenberg: Me and the Missus
Doug Greenberg: How low can you go?
Doug Greenberg: Dive! Dive!
Doug Greenberg: What a head!
Doug Greenberg: Common goldeneye
Doug Greenberg: The Lake Merritt hybrid duck
Doug Greenberg: Barrows goldeneyes