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Podiceps grisegena. Podiceps grisegena taken at the Anchorage Coastal Wildlife Refuge Potter's Marsh in Anchorage Podicepsgrisegena UTC Podicepsgrisegena Dewhurst Donna derivative work mario modesto talk Cropped image User Mario modesto Podicepsgrisegena PDUSGov original upload log This image is derivative work of the following