Model selection for May and June.

We first evaluated if the sigma parameter differed between sexes (see Fig F in S1 Supporting Information) and then used the Kuo & Mallick (1998) approach under two different priors to select covariates for λ0. The results are post-process model weights in a comparison of all possible models. Covariates: “sex” = male vs female; “b” = local behaviour or trap response by an individual; “t” = time covariate that varies with sampling occasion. Selected models are highlighted in bold.