This dataset relates to two closely related experiments conducted using similar methodologies: one - Discrimination Ability experiment - from December 2021 to May 2022 and another - Multiple Models experiment - from October 2022 to April 2023. Data describe the responses of wild birds (mainly Great tits Parus major) towards feeding stations where insect-like stimuli concealed a possible food reward. Data include: Passive Integrated Transponder (PIT) tag records of birds visiting the feeders (note that not all birds were tagged); demographic information about the tagged birds; timings and set-up of the feeders used at each session; and which stimuli from each session were “attacked” (and in what order).