 The noisy miner colony <unk> to mob inter @-@ specific intruders and predators . The noisy miner will approach the threat closely and point , expose eye patches , and often bill @-@ snap . Five to fifteen birds will fly around the intruder , some birds diving at it and either pulling away or striking the intruder . The mobbing continues until the intruder remains still , as with a tawny <unk> ( <unk> <unk> ) , or it leaves the area . <unk> of snakes and <unk> is particularly intense , and most species of bird , even non @-@ predators , entering the territory are immediately chased . The noisy miner has been recorded attacking an Australian <unk> @-@ <unk> ( <unk> <unk> ) during the day , <unk> , <unk> , ducks and <unk> on lakes at the edge of territories , crested pigeons ( <unk> <unk> ) , <unk> , and rosellas . Non @-@ predatory mammals such as bats , cattle , sheep , and <unk> are also attacked , though less vigorously than birds . 
