Sap tree feeding preference by Yellow-bellied Sapsuckers (Sphyrapicus varius) based ontree size and species in Cheboygan County, northern lower Michigan

To test for preference in choice of sap trees, the area surrounding an active YellowbelliedSapsucker (Sphyrapicus varius ) nest was surveyed using four randomly selected20 x 20m plots at the University of Michigan Biological Station in Cheboygan County,Michigan

Amanda L. McLenon, unknown