In one of my animal product catalogs I have shows an "anti-bird catching" collar for a cat. It consists of brightly colored panels and is designed to flair out.
Evidently this is better than any bells as the birds can react to the small movements of the bright colors easier and sooner.
The article pointed out that a bell on the collar may make the cat more vulnerable to predators as if the cat runs away, the bell rings, where when the cat is stalking a bird, the bell does not ring until it is too late.
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abusus non tollit usum - A right should NOT be withheld from people on the basis that some tend to abuse that right.
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