Category: Piciformes

Ruby-throated hummingbirds observed following yellow-bellied sapsucker

Yellow-bellied Sapsucker (Sphyrapicus varius) Science Article 8 abstract The authors document an observed association between Yellow-bellied Sapsucker and Ruby-throated Hummingbird. They conclude that the hummingbirds’feeding at sapsucker wells may effect the timing of hummingbird migration. by David Flaspohler and David Grosshuesch Several species of hummingbirds are known to feed at the sap wells created by […]

RACIAL AND SEXUAL DIFFERENCES IN MIGRATION IN SPHYRAPICUS VARIUS

Yellow-bellied Sapsucker (Sphyrapicus varius) Science Article 2 abstract The subspecies of the Yellow-bellied Sapsucker (Sphyrapicus varius) are strongly characterized not only in morphology but in migratory habits as well. General outlines of the breeding ranges and winter ranges of the four subspeciesa re given in figures 1 and 2.These illustrate the well-known facts that S. […]

Male-Female Interactions by Yellow-bellied Sapsuckers on Wintering Grounds

Yellow-bellied Sapsucker (Sphyrapicus varius) Science Article 5 abstract On 23 March 2002, in my wooded yard near Zebulon, Wake County,NC, I watched two Yellow-bellied Sapsuckers (Sphyrapicus varius), a maleand a female, engage in behavior I had never before witnessed. The malewas perched on the trunk of a small hickory (Carya sp.) having bark riddledwith sapsucker […]

Altruism in nesting Yellow-Bellied Sapsucker

Yellow-bellied Sapsucker (Sphyrapicus varius) Science Article 6 abstract Power (1975, Science 189: 142) presented the theory of altruism in describing experiments designed to test it on wild Mountain Bluebirds (Sialia currucoides). He considered his results negative, but they are pertinent to observations I presented briefly (Kilham 1971, Wilson Bull. 83: 159) but not in detail, […]