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Topic: Vireonidae

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	SIBLING SPECIES OF GREENLETS (VIREONIDAE) IN SOUTHERN BRAZIL (Site not responding. Last check: 2007-11-06)
		Patton and Smith (1981) suggest, using electrophoresis, that geographical separation started long ago for two morphologically different pocket go- pher populations that still interbreed, while rapid genetic divergence with recent geographic separation within one of the populations has produced siblings or "paraphyletic speciation." Avise et al.
		One could argue that birds that depend on vocalizations to rec- ognize their species (Tyrannidae, perhaps Vireonidae) might evolve dif- ferent morphologies rather slowly, leading to sibling species.
		(1988) suggested that overall changes in Vireonidae may occur at normal rates if they are undersplit taxonomically, perhaps due to taxo- nomic emphasis on plumages rather than on voice or other aspects.
	elibrary.unm.edu /sora/Wilson/v103n04/p0559-p0567.html (4869 words)

	Classification of birds of South America Part 09 (Site not responding. Last check: 2007-11-06)
		The Vireonidae was formerly placed, based on some morphological studies (e.g., Beecher 1953), in or next to the nine-primaried oscines in linear sequences (e.g., Meyer de Schauensee 1970, Ridgely and Tudor 1989); however, genetic data (e.g., Johnson et al.
		Even retention of these groups as subfamilies (e.g., Blake 1968a) within the Vireonidae is refuted by genetic data (Johnson et al.
		Relationships of genera within the family are not well-resolved, and preliminary genetic data do not provide clear relationships among the genera (Johnson et al.
	www.museum.lsu.edu /~Remsen/SACCBaseline09.html (6797 words)

	[No title]
		The crown and upper half of the head is fl with a partial white eye-ring and lores.
		This pattern is unique in the family Vireonidae.
		The iris is brownish red, the bill fl.
	fwie.fw.vt.edu /WWW/esis/lists/e102007.htm (4135 words)

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