Accuracy of Population Estimates of Mourning Doves Using Recapture Data

The accuracy of Lincoln Index estimates for a wild population of mourning doves (Zenaida macroura) of known size was examined. Data indicated there was a tendency to overestimate population size regardless of the percentage of the population that was marked. Learned trap-escape behavior apparently caused the observed overestimations. A similar bias probably exists for other studies on birds.