A comprehensive excel spreadsheet with two tabs containing relevant data concerning the presence/absence of masturbation in birds. Variables Order Species latin and common names Indication of whether masturbation has been observed in this species before Indication of confidence of respondent Sex of bird Number of individuals observed masturbating Wild or captive origin Group size Housing conditions with list of four potential options Rearing origin (hand or parent reared) Age (adult or juvenile) Condition (good or bad) Any applicable notes Reliability of data (scored 1-4 with being highest score) There is a second tab on the excel spreadsheet which details the breeding system of birds that were reported in our data.