 Noisy miner attacks are not limited to chasing the intruder , and aggressive incidents often result in the death of the <unk> . Reports include those of two noisy miners repeatedly pecking a house sparrow ( <unk> <unk> ) at the base of its skull and killing it in six minutes ; one noisy miner grasping a <unk> <unk> ( <unk> <unk> ) by the wing while another <unk> it on the head until it died ; and a sacred <unk> ( <unk> <unk> ) being chased and harassed for over five hours and then found dead with a fractured skull . 
