MacGillivray's Warbler
Oporornis tolmiei
Synopsis: Nests in shrubs in montane forests throughout the state, and more sporadically in lowland forest and riparian areas. Most notable are the records from eastern Lake, southern Harney, southern Malheur, eastern Deschutes, eastern Jefferson, and northwestern Umatilla Counties, as well as from the immediate coast and from woods along the Willamette and Columbia Rivers.

Habitat Associations:
strongest
Manzanita-dominant Shrubland (15439 acres)
Edges of Recently Cutover/Burnt Forest (1660268 acres)
strong
Northeast Mixed Conifer Forest (2797894 acres)
Jeffery Pine Forest/Woodland (53780 acres)
Conifer Woodland on Serpentine Bedrock (51874 acres)
Douglas Fir-W. Hemlock-W. Red Cedar Forest (6577197 acres)
Douglas Fir-White Fir/Tanoak-Madrone Mixed Forest (1126272 acres)
Douglas Fir/White Oak Forest (196197 acres)
Ponderosa Pine Forest/Woodland (4315747 acres)
Ponderosa Pine/White Oak Forest & Woodland (161283 acres)
Red Alder (124169 acres)
Aspen Groves (22267 acres)
Siskiyou Mtns Mixed Deciduous Forest (200392 acres)
South coast Mixed Forest (2888 acres)
Siskiyou Mtns Shrubland on Serpentine Bedrock (32403 acres)
Northeast Canyon Grass & Shrubland (399425 acres)
Grassland & Fir-Ponderosa Interspersed (358415 acres)
Streamside/Wetland Shrubland (1671 acres)
some
True Fir-Hemlock Montane Forest (1528157 acres)
Ponderosa Pine-dominant Mixed Conifer Forest (355188 acres)
Douglas Fir-Port Orford Cedar Forest (166447 acres)
Douglas Fir dominant - Mixed Conifer Forest (2534262 acres)
Ponderosa-Lodgepole Pine on Pumice (851119 acres)
W. Juniper Woodland (2396682 acres)
Mixed Conifer/Mixed Deciduous Forest (1283572 acres)
Lake/Pond Shoreline & Islands (504599 acres)
lesser
Mountain Hemlock Montane Forest (264871 acres)
Shasta Red Fir-Mountain Hemlock Forest (54084 acres)
Whitebark-Lodgepole Pine Montane Forest (1323 acres)
Subalpine Fir-Lodgepole Pine Montane Conifer (675367 acres)
Douglas Fir-Mixed Deciduous Forest (2934 acres)
Ponderosa Pine-W. Juniper Woodland (112015 acres)
White Oak Forest (115577 acres)
Mountain Mahogany Shrubland (1378 acres)
Western Oregon Riverine Woodland (27749 acres)

Relative Detectability: Fairly easy to detect by sight and song, and to confirm breeding.

Challenge: Determine if this species breeds more widely than shown in northern Klamath and southwestern Deschutes Counties.