Conspecific and not performance-based attraction on immigrants drives colony growth in a waterbird

Data to fit the integrated population model. The following R objects are included: "popcountTOT": counts of breeding females (yt in the paper); "nestlings": number of offspring produced per mature female (Jt) "R": number of recorded reproducing females (Rt) "rCH": capture-mark-recapture/resighting data; "f": occasion of first capture; "nyears": number of years; "z": known latent states; "z_inits": initial values for unknown latent states.