In 1951, a batch of 24 young animals both sexes Chilla or Grey fox Lycalopex griseus from continental Magallanes region, Chile – and perhaps also adjacent Argentina were released at Onaisin (65 km ESE Porvenir town, 53°18?S) on Tierra del Fuego Island in southernmost South America, to control European rabbit (Oryctolagus cuniculus) irruption that was considered detrimental sheep (Ovis aries) ra...