found: Work cat.: The Western North American Naturalist Digital Library Collection, 2004(Poecile)
found: ITIS, March 3, 2004(Order: Passeriformes-- perching birds; Family: Paridae-- chickadees, titmice; Genus: Poecile)
found: A.O.U. cklst. No. Am. birds, 1998:p. 463 (Genus Poecile Kaup)
found: BIOSIS Index to Organism Names WWW site, April 2, 2004(Name: Poecile; Classification: Paridae; Group: Aves)
found: Wikipedia, Dec. 8, 2005Willow tit article ("Taxonomic note: Most authorities retain Poecile as a subgenus within a broader view of the genus Parus, but the American Ornithologists' Union treats Poecile as a distinct genus.")
notfound: Web. 3