A wing and a wire

I occurred to note some birds perching on overhead energy traces the opposite day. They’d come and go when pushed by no matter notions and instincts govern such conduct. These wires should not have been prohibitively scorching just like the wires mentioned earlier.

Perhaps on this second, some wire heat even supplied avian consolation (Determine 1).

Determine 1 4 perched starlings on energy traces.

What these birds weren’t conscious of, and what did them no hurt in any manner, was the truth that they have been perched on wires carrying electrical energy at multi-kilovolt ranges. They’d blithely land on and take off from these wires again and again which raised a query.

Most birds round listed below are of small to average dimension. The starlings in Determine 1 are instance. Some birds although are actually fairly massive, as this crow is in Determine 2.

Determine 2 An area crow.

Additionally too, overhead wire insulation doesn’t final ceaselessly. I’ve seen it fray.

If any two overhead wires have been put in too carefully collectively, perched birds’ wing spans may be capable to straddle the gap between such wires. Two birds deciding to take off at simply the identical second may make wing tip contact with horrendous consequence (Determine 3).

Determine 3 Calamity strikes when two birds unfold their wings and contact wing suggestions.

Other than all different energy line design necessities, fowl proofing of overhead wires by spacing them minimally far aside would appear to be an necessary issue as properly.

Failing that, we would every now and then be sidewalk squab.

John Dunn is an electronics advisor, and a graduate of The Polytechnic Institute of Brooklyn (BSEE) and of New York College (MSEE).

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