Smith and Bybee Wetlands Natural Area (aka Smith and Bybee Lakes) in northeast Portland is a great spot in late summer as the water levels drop. Large flocks of American White Pelicans, California Gulls, Great Egrets, Great Blue Herons, and various shorebirds gather to feed in the shallow water and on the mudflats. On this visit, most birds were pretty far away, but could be scanned with a scope. Western and Least Sandpipers were the only shorebirds I could pull out of the distant flocks, but other species have been reported recently.
On Bybee Lake, large numbers of Blue Herons and Great Egrets were gathered. At the edge of the group was this Snowy Egret, an uncommon visitor to the Portland area. Here is a nice comparison with the larger Great Egret.
The lumps on the shoreline are dead and dying waterfowl, mostly Northern Shovelers. Warm temperatures and low water levels sometimes lead to outbreaks of avian botulism. Outbreaks usually subside with cooler temperatures and rain, which we are now getting in Portland.