Winter distribution and abundance of bird populations of different-aged Douglas-fir forests in the southern Washington Cascades

Citation:

Manuwal, D.A., M. Huff, J. Buchanan, and R. Lundquist. 1984. Winter distribution and abundance of bird populations of different-aged Douglas-fir forests in the southern Washington Cascades. U.S. Forest Service, Contract Number PNW-83-208. 19pp.