slaty-backed gull, ring-billed gulls, and american herring gulls resting on ice at humber bay park east

smithsonianus schistisagus delawarensis birdwatching conservation slatybacked environment ornithology ringbilled background beautiful undefined waterbird waterfowl shorebird american colorful wildlife herring resting aquatic birding ecology feather natural ontario outdoor plumage scenery tourism seabird mudflat humber winter animal beauty bright canada frozen nature season travel flight gulls larus avian black brown color fauna flock great lakes group water white ducks goose gull