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Filtering by: Subject Spotted owl -- Nests -- Oregon Advisor Forsman, Eric

Competitive interactions and resource partitioning between northern spotted owls and barred owls in western Oregon

Creator:

Wiens, J. David

Abstract:

The federally threatened northern spotted owl (Strix occidentalis caurina) is the focus of intensive conservation efforts that have led to much forested land being reserved as habitat for the owl and associated wildlife species throughout the Pacific Northwest of the United States. Recently, however, a relatively new threat to spotted...

Resource Type:

Dissertation

Full Text:

spotted owls and barred owls on the owl interaction study area in western Oregon, USA, 2007– 2009
The range expansion of the northern barred owl : an evaluation of the impact on spotted owls

Creator:

Kelly, Elizabeth G.

Abstract:

Since their range expansion into the Pacific Northwest, anecdotal evidence suggests that northern barred owls (Strix varia varia) may be displacing northern spotted owls (Strix occidentalis caurina). My objectives were to characterize barred owl distribution and population increase in Oregon, investigate spotted owl territory performance before and after barred owl...

Resource Type:

Masters Thesis

Full Text:

and population increase in Oregon, investigate spotted owl territory performance before and after