Resumen de Comparison between two censuses of Feral Pigeon (Columba livia var.) from Barcelona: an evaluation of seven years of control by killing
Since 1983 the City Council of Barcelona has been attempting to control of the Feral Pigeon Columba livia var. Population by means of a trapping programme. To evaluate the effects of this programme we have compared two pigeon censuses carried out in 1983 and 199 1. The difference between these censuses (948 vs. 940 pigeons/~m2) is not significant (t=0.047, df=35, n.s.), which suggests a low efhciency of the method. The failure of the control programme might be due to the effects of intrapopulation regulation.
