@article {52577,
	title = {Birdsong {\textquoteleft}performance{\textquoteright} studies: a sad commentary},
	journal = {Animal Behaviour},
	volume = {133},
	year = {2017},
	month = {Jan-11-2017},
	pages = {209 - 210},
	keywords = {birdsong, performance, sexual selection, vocal deviation},
	issn = {00033472},
	doi = {10.1016/j.anbehav.2017.09.019},
	url = {http://linkinghub.elsevier.com/retrieve/pii/S0003347217303068},
	author = {Kroodsma, Donald}
}
