Figure 2. Behavioural divergence within cane toads.

The upper panel shows the mean time taken for a free-ranging toad to approach an experimental feeding station and begin feeding, as a function of whether or not the station included an already-feeding conspecific toad. The lower panel shows the time taken for toads to exit from shelter items in laboratory trials. The two groups of toads compared in this panel are ‘bold’ and ‘shy’ animals, as categorized from their responses to experimental feeding stations in field trials conducted on the previous night. ‘Bold’ toads are those that approached an empty feeding station (asocial), whereas ‘shy’ toads are those that approached a feeding station containing a conspecific (social). The graphs show mean values and associated standard errors.