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.
No takes yet. Share an insight, caveat, or question.
Scarf et al. (2011) studied this question.
Synapse has enriched 3 closely related papers on similar clinical questions. Consider them for comparative context: