Behavioral Ecology May 2004; Vol. 15, No. 3
URL: http://beheco.oupjournals.org/content/vol15/issue3/index.shtml?etoc
Singing is not energetically demanding for pied flycatchers, Ficedula hypoleuca
Sally Ward, Helene M. Lampe, and Peter J. B. Slater Behav. Ecol. 2004 15: 477-484. http://beheco.oupjournals.org/cgi/content/abstract/15/3/477?etoc
Patterns of song evolution and sexual selection in the oropendolas and caciques
J. Jordan Price and Scott M. Lanyon Behav. Ecol. 2004 15: 485-497. http://beheco.oupjournals.org/cgi/content/abstract/15/3/485?etoc
Extrapair paternity and the evolution of bird song
Laszlo Zsolt Garamszegi and Anders Pape Moller Behav. Ecol. 2004 15: 508-519. http://beheco.oupjournals.org/cgi/content/abstract/15/3/508?etoc
