Dale, I never had any doubt that what Russell meant was that the sparrows
are involved in a mutualistic interaction with the dandelions. They take a
few seeds and poop a little packet of fertilizer at the base of the plant.

Dennis Paulson, Director phone: (206) 756-3798
Slater Museum of Natural History fax: (206) 756-3352
University of Puget Sound e-mail: dpaulson at ups.edu
Tacoma, WA 98416