Chikuru chinokonzeresa kukanganisa kupenya kweshiri, kupfupika kwemidziyo yeshiri uye kupfupika kwemuviri weshiri.Pakati pavo, rwendo rwemutsara rwakakonzerwa nekuita tsvina pashongwe neshiri huru dzemvura dzakadai seardeidae neshuramurove inosvika makumi mapfumbamwe kubva muzana yenzira yekukuvadza shiri, ndicho chikonzero chikuru cherwendo rweshiri.Bird nest material short circuit, shiri body short circuit inokonzerwa negedhi redunhu rinonyanya kuitika munharaunda yekugovera.Naizvozvo, tarisiro yetambo yekutumiraanti 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.