By Warren Cornwall
The Seattle Times
August 13, 2008
Buffeted by years of logging and the invasion of a tougher owl, populations of the northern spotted owl are falling year after year, despite sweeping protections for the old-growth forests it inhabits. Now, genetic problems are adding to the reasons for worry. A just-released study found the remaining birds are so genetically similar, they are at risk of entering an “extinction vortex.” Read more…