Are urban habitats ecological traps for a native songbird? Season‐long productivity, apparent survival, and site fidelity in urban and rural habitats

摘要: The northern mockingbird Mimus polyglottos is a native species that more abundant in urban than non‐urban habitats (i.e. an urban‐positive species). Abundance alone, however, not accurate index of habitat quality because could represent ecological traps (attractive sink habitat) for species. We compared nesting productivity, apparent survival, and decision rules governing site fidelity rural habitats. If the higher abundance mockingbirds driven by habitat, then we predicted productivity would exceed estimated source‐sink threshold mockingbirds. If, on other hand, act as traps, be lower fall below threshold. Productivity pairs exceeded offset adult mortality, which makes likely source habitat. Apparent survival was habitats, although this dispersal mortality. Decision also appeared to differ between populations. Females with successful nests were return those unsuccessful nests, whereas rates females nonurban unrelated success may related availability. conclude do lure into increased breeding contributes their