Impamvu nyamukuru zitera amakosa ni flashover yinyoni, umuzenguruko muto wibikoresho byinyoni hamwe nizunguruka rigufi ryumubiri winyoni. Muri byo, urugendo rw'umurongo rwatewe no kwiyuhagira ku munara n’inyoni nini z’amazi nka ardeidae na stork zingana na 90% by’umurongo wogukwirakwiza inyoni zangiza, iyi ikaba ari yo mpamvu nyamukuru y’urugendo rw’inyoni. Ibyari byinyoni ibikoresho bigufi, umuzingo muto winyoni byatewe n irembo ryumuzunguruko ahanini byabaye mukuzunguruka. Kubwibyo, intumbero yumurongo woherezaKurwanya inyonini ukurinda kwangirika kwinyoni guterwa ninyoni nini.Kurwanya inyonini urushinge rwicyuma rushyizwe kumunara kugirango ibuze inyoni nini kugenda hejuru yumunara kugirango ikureho flashover. Kurwanya inyoni bikoreshwa cyane cyane mukurinda flashover yinyoni zigihugu kumurongo kuva 110 kv kugeza 500 kv.