Wildlife watching

Siletz Bay National Wildlife Refuge offers exceptional wildlife viewing opportunities year-round. The refuge's salt marshes, mudflats, tidal sloughs, open water, and forested uplands support a diverse community of birds, fish, and mammals. Seasonal migrations, nesting activity, and changing tides ensure that every visit offers something different.

Spring (March-May)

Spring is one of the most active seasons on the refuge as migratory birds return to the Oregon coast and resident wildlife begins nesting. Waterfowl numbers remain high as northbound migrants stop to rest and feed in the estuary. Watch for Northern Pintail, Green-winged Teal, American Wigeon, Gadwall, and Mallard throughout the bay.

Great Blue Herons and Great Egrets forage in marshes and tidal channels, while Ospreys return to nesting territories and can often be seen hovering over the estuary in search of fish. Songbirds become more active as migrants arrive, including Black-throated Gray Warblers, Yellow Warblers, and Common Yellowthroats. Spring Chinook Salmon begin moving through the estuary on their way to freshwater spawning grounds.

Species highlights:

• Great Blue Heron
• Great Egret
• Osprey
• Northern Pintail
• Green-winged Teal
• American Wigeon
• Black-throated Gray Warbler
• Yellow Warbler
• Common Yellowthroat
• Spring Chinook Salmon

Summer (June-August)

Summer is the nesting and brood-rearing season. Mallards and mergansers lead ducklings through quiet sloughs and backwaters. Ospreys are highly visible as they fish throughout the day to feed growing young.

The refuge's wetlands and shorelines are excellent places to observe Great Blue Herons, Great Egrets, Belted Kingfishers, and swallows. Visitors paddling the bay or walking the Alder Island Nature Trail may occasionally spot River Otters and American Mink along tidal channels.

Species highlights:

• Osprey
• Great Blue Heron
• Great Egret
• Black-headed Grosbeak
• Mallard
• Common Merganser
• Red-breasted Merganser
• Belted Kingfisher
• Tree Swallow
• Purple Martin
• River Otter
• American Mink

Fall (September-November)

Fall migration brings some of the refuge's highest concentrations of birds. Thousands of shorebirds move along the Pacific Flyway and use Siletz Bay as a place to rest and refuel. Shorebird activity typically peaks in September.

Green-winged Teal are often among the first wintering waterfowl to arrive. As colder weather pushes birds south, Mallards, Northern Pintails, Gadwalls, and other dabbling ducks become increasingly common. Diving ducks begin arriving later in the season. Raptors, including Sharp-shinned Hawks, patrol the edges of the estuary in search of prey.

Coho Salmon and Coastal Cutthroat Trout enter local waterways during late summer and fall, providing another seasonal wildlife spectacle.

Species highlights:

• Western Sandpiper
• Least Sandpiper
• Dunlin
• Greater Yellowlegs
• Green-winged Teal
• Northern Pintail
• Gadwall
• Mallard
• Sharp-shinned Hawk
• Bald Eagle
• Coho Salmon
• Coastal Cutthroat Trout

Winter (December-February)

Winter is the best season to observe large numbers of waterfowl, sea ducks, and shorebirds. Protected estuarine waters provide important winter habitat for many species.

Visitors can expect to see Buffleheads and Grebes. Sanderlings and other shorebirds feed along sandy shorelines and mudflats, while Bald Eagles and other raptors hunt throughout the estuary.

From coastal viewpoints near the refuge, Gray Whales may be seen migrating south in December and January and north in late winter and spring.

Species highlights:

• Bufflehead
• Western Grebe
• Horned Grebe
• Sanderling
• Bald Eagle

Wildlife Viewing Tips

• Early morning and late afternoon often provide the best wildlife viewing opportunities.
• Bring binoculars or a spotting scope for viewing birds across the bay and marshes.
• Check tide conditions before your visit, as wildlife use of mudflats and tidal channels changes throughout the day.
• Remain on designated trails and viewing areas to minimize disturbance to wildlife.
• Fall and winter generally offer the greatest diversity and abundance of waterfowl and shorebirds, while spring and summer provide the best opportunities to observe nesting behavior and young wildlife.