@article {309677,
	title = {Pigeons on par with primates in numerical competence.},
	journal = {Science},
	volume = {334},
	year = {2011},
	month = {2011 Dec 23},
	pages = {1664},
	abstract = {<p>Although many animals are able to discriminate stimuli differing in numerosity, only primates are thought to share our ability to employ abstract numerical rules. Here, we show that this ability is present in pigeons and that their performance is indistinguishable from that displayed by monkeys.</p>
},
	keywords = {Animals, Biological Evolution, Cognition, Columbidae, Discrimination (Psychology), Macaca mulatta, Mathematical Concepts, Reaction Time},
	issn = {1095-9203},
	doi = {10.1126/science.1213357},
	author = {Scarf, Damian and Hayne, Harlene and Colombo, Michael}
}
