Nest of Great Gray Owls found on "Big Day" in St. Louis Co. 1995 May 20. Photo by Dave Cahlander.American Bittern | Boreal Owl (stuffed) | Sandhill Crane | Purple Finch | Great Gray Owl | Glaucous-winged Gull | Red Knot | Lesser Black-backed Gull | Lesser Black-backed Gull (in flight) | Great Gray Owl (chicks) | Red-necked Phalarope | Sharp-tailed Sparrow | Summer Tanager | Upland Sandpiper | Yellow-billed Loon