Continued decline of the northern spotted owl associated with the invasive barred owl, habitat loss
Thursday, December 10, 2015 - 18:12
in Biology & Nature
Northern spotted owl populations are declining in all parts of their range in the Pacific Northwest, according to research published in The Condor. Based on data from 11 study areas across Washington, Oregon and northern California, a rangewide decline of nearly 4 percent per year was estimated from 1985 to 2013.