 Five individuals conveyed on a ship from England <unk> near <unk> de <unk> in Venezuela in November 1949 , but subsequently vanished . In 1987 , a small population of common starlings was observed nesting in gardens in the city of Buenos Aires . Since then , despite some initial attempts at eradication , the bird has been expanding its breeding range at an average rate of 7 @.@ 5 km ( 4 @.@ 7 mi ) per year , keeping within 30 km ( 19 mi ) of the Atlantic coast . In Argentina , the species makes use of a variety of natural and man @-@ made nesting sites , particularly <unk> holes . 
