Northern Saw-whet Owl
Aegolius acadicus
Synopsis: Nests in tree cavities throughout most of the state. Of particular note is the record from old-growth juniper in eastern Malheur County, although breeding was not confirmed.

Habitat Associations:
strongest
Jeffery Pine Forest/Woodland (16102 acres)
Douglas Fir-Mixed Deciduous Forest (2934 acres)
Edges of Recently Cutover/Burnt Forest (1172148 acres)
strong
Mountain Hemlock Montane Forest (201187 acres)
Ponderosa Pine-dominant Mixed Conifer Forest (199590 acres)
Northeast Mixed Conifer Forest (1569073 acres)
Douglas Fir-W. Hemlock-W. Red Cedar Forest (4388445 acres)
Douglas Fir/White Oak Forest (150655 acres)
Ponderosa Pine/White Oak Forest & Woodland (45003 acres)
W. Juniper Woodland (1070920 acres)
some
Ponderosa Pine Forest/Woodland (2425249 acres)
Red Alder (94246 acres)
Mixed Conifer/Mixed Deciduous Forest (891804 acres)
Western Oregon Riverine Woodland (6726 acres)
lesser
Sitka Spruce-W. Hemlock Maritime Forest (249753 acres)
True Fir-Hemlock Montane Forest (944144 acres)
Conifer Woodland on Serpentine Bedrock (18133 acres)
Lodgepole Pine Forest/Woodland (188384 acres)
Subalpine Fir-Lodgepole Pine Montane Conifer (259089 acres)
Douglas Fir-Port Orford Cedar Forest (136030 acres)
Douglas Fir-White Fir/Tanoak-Madrone Mixed Forest (667283 acres)
Douglas Fir dominant - Mixed Conifer Forest (1407387 acres)
Ponderosa-Lodgepole Pine on Pumice (854363 acres)
White Oak Forest (48765 acres)
South coast Mixed Forest (2888 acres)
Grassland & Fir-Ponderosa Interspersed (213531 acres)

Relative Detectability: Quite difficult to detect due to nocturnal habits, and very difficult to confirm breeding.

Challenge: Attempt to confirm breeding more widely in Cascades. Determine extent of occurrence in juniper woods of eastern Oregon.