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Article
Muir D. Eaton, Auteur ; K. P. Johnson, AuteurAbstract Male and female birds can exhibit striking differences in morphology (dimorphism), including exaggerated plumage structures, size differences, and feather color differences, yet most species are considered to have identical sexes. Class[...]
Article
J. J. Price, Auteur ; K. P. Johnson, Auteur ; D. H. Clayton, AuteurThe abilities of some cave-nesting swiftlets to echolocate has traditionally been used to separate the genus Aerodramus, which includes echolocating species, from the genus Collocalia, thought to lack echolocation. Here we report the discovery o[...]
Article
Jose G. Tello, Auteur ; John M. Bates, Auteur ; K. P. Johnson, AuteurAbstract The tody-tyrant and flatbill assemblage, sensu Lanyon (1988a), includes 12 genera of tyrant flycatchers known variously as ?tody-tyrants? and ?flatbills.? Lanyon supported the monophyly of the group based on similar skull morphology and[...]
