Control Common starling

visiting bird feeder. adult has black beak in winter.

where introduced, common starling unprotected legislation, , extensive control plans may initiated. common starlings can prevented using nest boxes ensuring access holes smaller 1.5 in (38 mm) diameter need, , removal of perches discourages them visiting bird feeders.

western australia banned import of common starlings in 1895. new flocks arriving east routinely shot, while less cautious juveniles trapped , netted. new methods being developed, such tagging 1 bird , tracking establish other members of flock roost. technique analyse dna of australian common starling populations track migration eastern western australia occurring better preventive strategies can used. 2009, 300 common starlings left in western australia, , state committed further a$400,000 in year continue eradication programme.

in united states, common starlings exempt migratory bird treaty act, prohibits taking or killing of migratory birds. no permit required remove nests , eggs or kill juveniles or adults. research undertaken in 1966 identify suitable avicide both kill common starlings , readily eaten them. needed of low toxicity mammals , not cause death of pets ate dead birds. chemical best fitted these criteria drc-1339, marketed starlicide. in 2008, united states government poisoned, shot or trapped 1.7 million birds, largest number of nuisance species destroyed. in 2005, population in united states estimated @ 140 million birds, around 45% of global total of 310 million.