@article {297,
	title = {Economics of breeding territoriality in male Calliope Hummingibrds},
	journal = {Auk},
	volume = {104},
	year = {1987},
	note = {Trochilidae},
	pages = {242-253},
	keywords = {nonest, territoriality},
	author = {Armstrong, D. P.}
}
