Western Bluebird
Sialia mexicana
Synopsis: Breeds in tree cavities and nest boxes scattered throughout much of the forested part of the state. Most notable are the records from northern Malheur and eastern Lake Counties, as well as from near the central Oregon coast and from the slope of the western Cascades north of Linn County.

Habitat Associations:
More closely associated with suitable
tree cavities, and absence of competing European
Starling, than with particular vegetation types.
strongest
White Oak Forest (113081 acres)
Edges of Recently Cutover/Burnt Forest (1535862 acres)
strong
Ponderosa Pine-dominant Mixed Conifer Forest (249029 acres)
Northeast Mixed Conifer Forest (3043470 acres)
Jeffery Pine Forest/Woodland (52056 acres)
Conifer Woodland on Serpentine Bedrock (50403 acres)
Douglas Fir/White Oak Forest (189017 acres)
Ponderosa Pine Forest/Woodland (4171651 acres)
Ponderosa Pine/White Oak Forest & Woodland (161283 acres)
Aspen Groves (751 acres)
Siskiyou Mtns Mixed Deciduous Forest (178692 acres)
Siskiyou Mtns Shrubland on Serpentine Bedrock (32403 acres)
Subalpine Scattered Trees & Shrubs (62538 acres)
some
Douglas Fir dominant - Mixed Conifer Forest (2477846 acres)
Northeast Modified Grassland (801583 acres)
Edges of Cropland/Pasture/Orchard (4147050 acres)
lesser
Ponderosa Pine-W. Juniper Woodland (97802 acres)
Ponderosa-Lodgepole Pine on Pumice (826965 acres)
W. Juniper Woodland (2980835 acres)
South coast Mixed Forest (1061 acres)
Manzanita-dominant Shrubland (14271 acres)
Western Oregon Riverine Woodland (27749 acres)

Relative Detectability: Fairly easy to detect, and easy to confirm nesting.

Challenge: Determine if the species nests more widely than shown in Morrow, southeastern Klamath, and southwestern Lake Counties.