Data for: Aggressive hosts are undeterred by a cuckoo's hawk mimicry, but probably make good foster parents

We presented models of three species at drongo nests in 2019: an African cuckoo, a little sparrowhawk (Accipiter minullus), and a ring-necked dove (Streptopelia capicola). For each species we used two different models, which were 3D-printed in polylactic acid, and painted. In 2021, we repeated presentations of the hawk and dove models, alongside a rubber snake snake (Supkeyer 130 cm). The models were presented in a random order with an hour between trials. Prior to each trial, we set up a video recorder (Sony CX280 Full HD Handycam) in a blind 10 m from the nest, and tied the model to a branch approximately 2 m from the nest. Trials were filmed and lasted for 5 minutes, beginning when a drongo came within 5 m of the model. We quantified mobbing dives towards each model from video recordings. Mobs were defined as close swoops accompanied by a short sound, and sometimes involved direct contact with the model . As it was not possible to count blind to treatment type, mobs in a subset of videos were independently counted by another observer without prior knowledge of the experiment. We also checked nests of fork-tailed drongos, dark-capped bulbuls (Pycnonotus tricolor) and tchagra bush-shrikes (Tchagra australis and Tchagra senegalus) for predation every three days, +/- 1 day. Methods for processing the data: All analyses were carried out in R 4.1.3, see RMarkdown document for details