@article {Planque2008Spectral,
	title = {Spectral Overlap in Songs and Temporal Avoidance in a Peruvian Bird Assemblage},
	journal = {Ethology},
	volume = {114},
	number = {3},
	year = {2008},
	month = {March},
	pages = {262{\textendash}271},
	publisher = {Blackwell Publishing},
	keywords = {bioacoustics, birds, communities, ecology, neotropics},
	issn = {0179-1613},
	doi = {10.1111/j.1439-0310.2007.01461.x},
	url = {http://dx.doi.org/10.1111/j.1439-0310.2007.01461.x},
	author = {Planqu{\'e}, Robert and Slabbekoorn, Hans}
}
@article {Henry2010Habitatrelated,
	title = {Habitat-related differences in the frequency selectivity of auditory filters in songbirds},
	journal = {Functional Ecology},
	volume = {24},
	number = {3},
	year = {2010},
	month = {June},
	pages = {614{\textendash}624},
	publisher = {Blackwell Publishing},
	keywords = {aves, bioacoustics, birds, ecology, sensory-ecology},
	issn = {02698463},
	doi = {10.1111/j.1365-2435.2009.01674.x},
	url = {http://dx.doi.org/10.1111/j.1365-2435.2009.01674.x},
	author = {Henry, Kenneth S. and Lucas, Jeffrey R.}
}
@article {Morton1975Ecological,
	title = {Ecological Sources of Selection on Avian Sounds},
	journal = {The American Naturalist},
	volume = {109},
	number = {965},
	year = {1975},
	month = {January},
	pages = {17{\textendash}null},
	publisher = {The University of Chicago Press},
	abstract = {doi: 10.1086/282971},
	keywords = {bioacoustics, birds, ecology, evolution},
	doi = {10.1086/282971},
	url = {http://dx.doi.org/10.1086/282971},
	author = {Morton, Eugene S.}
}
