ed owls are found in northern spotted owl habitat. The California owls have been found at least as far north as Central Oregon in the Cascades and the Coast ranges. The mixing extends to Humboldt County in extreme northern California. The team did not find evidence for genetic mixing between either California or northern spotted owl subspecies and the Mexican spotted owl subspecies.

These data, along with other information, such as population estimates and assessment of habitat fragmentation, can be used to assess the status and recovery efforts for spotted owls, she says. Haig and her colleagues are now completing additional analyses of genetic differences among the three subspecies.

The USGS serves the nation by providing impartial scientific information to describe and understand the Earth, its resources and processes; minimize loss of life and property from natural disasters; manage water, biological, energy, and mineral resources; and enhance and protect our quality of life.

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Contact: Susan Haig
susan_haig@usgs.gov
541-750-7482
United States Geological Survey
5-Jun-2001

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