The Delta also supports more than ten percent of the world population of trumpeter swans. During the summer months, many ponds host a stately pair of trumpeter swans raising their young. Assorted seabirds including gulls. Shorebirds such as snipe, yellow-legs, dowitchers. Mountain goats can be observed feeding on mountainsides and ridges.
Beavers busily work on their dams and distinctive houses and cut tree limbs for their winter food.
Mink, otter, and other small furbearers inhabit the Delta and can be seen along the road if you watch closely. Scientific studies are being conducted to better understand and manage these animals. Streams, ponds, and sloughs provide spawning and rearing habitat for large numbers of sockeye and coho salmon. Adult sockeye and coho can be seen spawning during the late summer and fall months. Dolly Varden char and cutthroat trout are found in most streams.