Pretty sure that'll buff out!

In my workshop building in the lower floor (another tenant's area, but which was vacant back then), there was a junction box with small 3 phase busbar block and no cover, installed below the high ceiling (5m off the ground) - Fed by 6mm2 off an 32A breaker. And a pidgeon started building a nest in it, using construction site debris, which consists (among things useful for a birdie) of pieces of rusty iron wire (that is used to tie wood boards for concrete casting). Right on the so conveniently placed busbar block. Fireworks ensued. I was impressed finding out how much sticks and pieces of wire were already there and didnt short, there were several pieces of the wire resting on the busbars and millimeters of air or a small dry branch stick apart from the other phase

Poor pigeon!, imagine building a nest and getting that surprise! , there were no occupants in the Darksky?

Put it this way when we turned up we didn’t see anything lol