TY  - RPRT
TI  - Improving strategies to assess competitive effects of barred owls on northern spotted owls in the Pacific Northwest
AU  - J. David Wiens
AU  - Anne Weekes
PY  - 2011
DO  - 10.3133/fs20113096
UR  - https://pubs.usgs.gov/publication/fs20113096
ID  - fs20113096
ER  -