Characteristics of Sap Trees Used by Overwintering Sphyrapicus varius (Yellow-Bellied Sapsuckers) in an Old-Growth Pine Forest

Autor:	Varner, J. Morgan, Kush, John S., Meldahl, Ralph S.
Zdroj:	Southeastern Naturalist, 2006 Jan 01. 5(1), 127-134.
Databáze:	JSTOR Journals
Externí odkaz:	https://www.jstor.org/stable/3877928 Zobrazit plný text záznamu