Zvinonyanya kukonzera kukanganisa kupenya kweshiri, kupfupika kweshiri nest material uye kupfupika kwemuviri weshiri.Pakati pazvo, rwendo rwemutsara rwakakonzerwa nekuita tsvina pashongwe neshiri huru dzemvura dzakadai seardeidae uye stork dzinotora chikamu che90% chemhosva yekukuvadza shiri, ndicho chikonzero chikuru chekufamba kweshiri.Bird nest material short circuit, shiri body short circuit inokonzerwa negedhi redunhu rinonyanya kuitika munharaunda yekugovera.Naizvozvo, kutarisisa kwetambo yekufambisaanti bird spikesndeyekudzivirira kukuvara kweshiri kunokonzerwa neshiri huru.anti bird spikesitsono yesimbi yakasungirirwa pashongwe kudzivirira shiri huru kuti dzisafambe pashongwe kuitira kuti dzibvise kupenya kweshiri.Iyo inorwisa-shiri inoruma inonyanya kushandiswa kudzivirira kupenya kweshiri dzenyika mumutsara kubva ku110 kv kusvika ku500 kv.