The Tillamook Head COA (16 mi2) extends along the Oregon coast from Tillamook Head to Arcadia Beach. This area includes Ecola State Park and contains 9 miles of coastline between Seaside and Cannon Beach. Habitat is generally coastal Sitka spruce forest, opening up to a grassy bluff along the coastline. Sea stacks punctuate long sweep of shoreline to the south. Offshore islands provide nesting and loafing areas for several species of seabirds. This COA creates a contiguous chunk of habitat along with the Clatsop Plains, Necanicum Estuary, Necanicum River, and Saddle Mountain COAs.
Ecoregions
Coast Range
Oregon's Coast Range, known for its dramatic scenery, is extremely diverse, with habitats ranging from open sandy dunes to lush forests and from tidepools to headwater streams. It follows the coastline and extends east through coastal forest to the border of the Willamette Valley and Klamath Mountains ecoregions
Nearshore
The Nearshore ecoregion includes a variety of habitats ranging from submerged high-relief rocky reefs to broad expanses of intertidal mudflats in estuaries and hosts a vast array of fish, invertebrates, marine mammals, birds, plants, and micro-organisms. This ecoregion encompasses the area from the outer boundary of Oregon's Territorial Sea to the supra-tidal zone, and up into the estuaries.
Key Habitats
Coastal Dunes
Occurring along the Oregon coastline, coastal dunes provide habitat for species that prefer open, sandy habitats with a high degree of disturbance from winds and tides.
Estuaries
Estuaries are broadly defined as partially enclosed coastal bodies of tidally influenced water with one or more inputs of freshwater, and with a free or intermittent connection to the open sea. Estuaries typically occur at locations where freshwater from rivers, streams, or creeks meets saltwater from the nearshore ocean, creating a tidal basin that experiences frequent …
Grasslands
Grasslands include a variety of upland grass-dominated habitats, such as upland prairies, coastal bluffs, and montane grasslands.
Late Successional Mixed Conifer Forests
Late successional mixed conifer forests provide a multi-layered tree canopy, including large-diameter trees, shade-tolerant tree species in the understory, and a high volume of dead wood, such as snags and logs.
Oak Habitats
There are several oak habitat types in Oregon, where oaks comprise most of the canopy. These can include oak woodlands, oak forest, oak chaparral, and riparian oak. Oak savanna is covered in the Grasslands Key Habitat. Oaks may also co-dominate a canopy in oak/fir, oak pine, and oak hardwood habitats.
Flowing Water and Riparian Habitats
Flowing Water and Riparian Habitats include all naturally occurring flowing freshwater streams and rivers throughout Oregon as well as the adjacent riparian habitat.
Wetlands
Wetlands are habitats that are inundated or saturated by surface water or ground water at a frequency and duration sufficient to support vegetation typically adapted for life in sodden soil conditions. While dominated by periods of inundation, the natural ecological cycle may also include dry intervals. Permanently wet habitats include backwater sloughs, oxbow lakes, peatlands, …
Nearshore Key Habitats
Nearshore Habitats encompass the coastal and marine habitats in the area from the 3 nautical mile outer limit of Oregon’s territorial sea, where water depths average 66 m (216 ft) and range from 17 m to 194 m (56 to 308 ft), to the supratidal areas of the shoreline affected by wave spray and overwash …
Species of Greatest Conservation Need
Black Oystercatcher (Observed)
Haematopus bachmani
California Myotis (Modeled Habitat)
Myotis californicus
Caspian Tern (Observed)
Hydroprogne caspia
Chum Salmon (Documented)
Oncorhynchus keta
Coastal Cutthroat Trout (Documented)
Oncorhynchus clarki clarki
Coastal Tailed Frog (Modeled Habitat)
Ascaphus truei
Coho Salmon (Documented)
Oncorhynchus kisutch
Columbia Torrent Salamander (Modeled Habitat)
Rhyacotriton kezeri
Cope’s Giant Salamander (Modeled Habitat)
Dicamptodon copei
Fork-tailed Storm-Petrel (Modeled Habitat)
Oceanodroma furcata
Fringed Myotis (Modeled Habitat)
Myotis thysanodes
Harlequin Duck (Observed)
Histrionicus histrionicus
Hoary Bat (Modeled Habitat)
Lasiurus cinereus
Leach’s Storm-Petrel (Observed)
Hydrobates leucorhoa
Long-legged Myotis (Modeled Habitat)
Myotis volans
Marbled Murrelet (Observed)
Brachyramphus marmoratus
Northern Spotted Owl (Observed)
Strix occidentalis caurina
Olive-sided Flycatcher (Observed)
Contopus cooperi
Peregrine Falcon (Observed)
Falco peregrinus anatum
Western Purple Martin (Observed)
Progne subis arboricola
Red Tree Vole (Modeled Habitat)
Arborimus longicaudus
Silver-haired Bat (Modeled Habitat)
Lasionycteris noctivagans
Townsend’s Big-eared Bat (Observed)
Corynorhinus townsendii
Tufted Puffin (Observed)
Fratercula cirrhata
Western Snowy Plover (Observed)
Anarhynchus nivosus nivosus
Western Toad (Modeled Habitat)
Anaxyrus boreas
Steelhead / Rainbow / Redband Trout (Documented)
Oncorhynchus mykiss ssp