ThesisForaging Behavior and Functional Morphology of the Bark-foraging Birds of the Bouverie Audubon PreservePetersen, John D.A study was conducted on five bark-foraging birds at the Bouverie Audubon Preserve in Sonoma County, California. This study was divided into two parts. I. An ecoloqical study of the foraging behavior and mechanics of scansorial, bark-foraging birds. T . . .