@article {1534,
	title = {The nesting of the Duck Hawk in south-central Wisconsin},
	journal = {Wilson Bulletin},
	volume = {33},
	year = {1921},
	note = {Falconidae},
	pages = {160-165},
	keywords = {yesnest},
	author = {Stoddard, H. L.}
}
@article {985,
	title = {A nesting of the Philadelphia Vireo},
	journal = {Auk},
	volume = {38},
	year = {1921},
	note = {Vireonidae},
	pages = {26-44},
	keywords = {yesnest},
	author = {Lewis, H. F.}
}
@article {986,
	title = {A nesting of the Philadelphia Vireo},
	journal = {Auk},
	volume = {38},
	year = {1921},
	note = {Vireonidae},
	pages = {185-202},
	keywords = {yesnest},
	author = {Lewis, H. F.}
}
@article {1079,
	title = {Roof nesting Nighthawks},
	journal = {Wilson Bulletin},
	volume = {33},
	year = {1921},
	note = {Caprimulgidae},
	pages = {147-148},
	keywords = {yesnest},
	author = {Mayfield, G. R.}
}
@article {337,
	title = {The nuptial flight of the Allen Hummingbird},
	journal = {Condor},
	volume = {23},
	year = {1921},
	note = {Trochilidae},
	pages = {37},
	keywords = {terms},
	author = {Bassett, F. N.}
}
