Novel foraging task results
25 males were assessed with the novel foraging assay, of which 7 were unable to complete the task within the established cut-off (birds that did not pass any given stage within 60 trials were pulled from testing). Of those males that did pass, it took an average of 43.61 trials (s.d.=22.40 trials) to do so. Solvers used for stimuli were selected from the 6 fastest males to solve the task, and took an average of 22.67 trials to solve the task. Six out of seven non-solvers were used for stimuli, and all Non-Solvers took at least 60 trials before they were pulled from testing (average=90.67 trials). Full results from the novel foraging task can be found in the Supplementary Materials.