The Pacific Northwest forest apparently isn’t big enough for the both of them.
Links:
[1] http://admin.indiaenvironmentportal.org.in/news/northern-spotted-owl-danger-again-and-time-it%E2%80%99s-another-owl
[2] http://admin.indiaenvironmentportal.org.in/category/newspaper/washington-post
[3] http://admin.indiaenvironmentportal.org.in/category/thesaurus/wildlife
[4] http://admin.indiaenvironmentportal.org.in/category/thesaurus/birds
[5] http://admin.indiaenvironmentportal.org.in/category/thesaurus/united-states-america-us
[6] http://admin.indiaenvironmentportal.org.in/category/thesaurus/endangered-species
[7] http://admin.indiaenvironmentportal.org.in/category/thesaurus/deforestation
[8] http://admin.indiaenvironmentportal.org.in/category/thesaurus/habitat