Estimating on the fly: the approximate number system in rufous hummingbirds (Selasphorus rufus)

Mia Corliss, Theo Brown, T. Andrew Hurly, Susan D. Healy & Maria C. Tello-Ramos
When presented with resources that differ in quantity, many animals use a numerosity system to discriminate between them. One taxonomically widespread system is the approximate number system. This is a numerosity system that allows the rapid evaluation of the number of objects in a group and which is regulated by Weber’s Law. Here we investigated whether wild, free-living rufous hummingbirds (Selasphorus rufus) possess an approximate number system. The hummingbirds were presented with two experiments. In...
1 citation reported since publication in 2021.
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