@article {936,
	title = {Prolonged incubation by an Anna Hummingbird},
	journal = {Condor},
	volume = {163},
	year = {1956},
	note = {Trochilidae},
	keywords = {novelty, yesnest},
	author = {Kelly, J. W.}
}
@article {980,
	title = {A sea-cave nest of the Black Swift},
	journal = {Condor},
	volume = {58},
	year = {1956},
	note = {Apodidae},
	pages = {183-187},
	keywords = {yesnest},
	author = {Legg, K.}
}
@article {1608,
	title = {Territorial activities of the American Robin <i>Turdus migratorius</i>},
	journal = {Ibis},
	volume = {98},
	year = {1956},
	note = {Turdidae},
	pages = {448-452},
	keywords = {territoriality, yesnest},
	author = {Young, H.}
}
@article {342,
	title = {Minimum space requirements of some nesting passerine birds},
	journal = {Wilson Bulletin},
	volume = {68},
	year = {1956},
	note = {Emberizidae, Paruldiae, Vireonidae},
	pages = {200-209},
	keywords = {yesnest},
	author = {Beer, J. R. and L. D. Frenzel and N. Hansen}
}
@article {331,
	title = {Nesting of the Blue-black Grassquit in Panama},
	journal = {Condor},
	volume = {58},
	year = {1956},
	note = {Emberizidae},
	pages = {229-231},
	keywords = {yesnest},
	author = {Barnard, G. C.}
}
@article {277,
	title = {Pterlyography and molt of the Allen Hummingbird},
	journal = {Condor},
	volume = {58},
	year = {1956},
	note = {Trochilidae},
	pages = {121-133},
	keywords = {nonest},
	author = {Aldrich, E. C.}
}
@article {371,
	title = {Unusual eggs of the Boat-billed Heron.},
	journal = {Wilson Bulletin},
	volume = {68},
	year = {1956},
	note = {Ardeidae},
	pages = {251-252},
	keywords = {yesnest},
	author = {Blake, E. R.}
}
@article {981,
	title = {Ecological overlap of Anna and Allen hummingibrds nesting at Santa Cruz, California},
	journal = {Condor},
	volume = {58},
	year = {1956},
	note = {Trochilidae},
	pages = {393-405},
	author = {Legg, K. and F. A. Pitelka}
}
@article {1454,
	title = {Life history of the Ruddy Ground-Dove},
	journal = {Condor},
	volume = {58},
	year = {1956},
	note = {Columbidae},
	pages = {188-205},
	keywords = {summary, yesnest},
	author = {Skutch, A. F.}
}
@article {1453,
	title = {A nesting of the Collared Trogon},
	journal = {Auk},
	volume = {73},
	year = {1956},
	note = {Trogonidae},
	pages = {354-366},
	keywords = {summary, yesnest},
	author = {Skutch, A. F.}
}
@article {828,
	title = {Notes on a nest of the Guianana Chachalaca},
	journal = {Condor},
	volume = {58},
	year = {1956},
	note = {Cracidae},
	pages = {293-294},
	keywords = {yesnest},
	author = {Haverschmidt, F.}
}
