Assertion: barred owl | /r/HasProperty | documented in oregon
Facets:
Source sentences:
text: The first barred owls arrived in British Columbia in 1959 and were first documented in Oregon in the mid-1970s (see figure one.)
text: Barred owls reached the range of the northern spotted owl in British Columbia by about 1959, continued to expand southward, and were first documented in Washington, Oregon, and California in the 1970s.