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There were some experiments in WWII with camouflaging aircraft by putting light bulbs on them - I think it worked, but I don't think aircraft fly well with lots of lightbulbs on them.There are a number of issues with zebra.Firstly, ofcourse, they are not looking to camouflage themselves from humans, but mostly I imagine from big cats, which have less good colour vision to primates.Secondly, the main purpose of the stripes is to break up the outlines, so it is difficult to tell that the shape you are looking at is a zebra shape (even more so as they move, and the moving stripes would confuse even more). I don't know if heat haze might further add to the confusion of shapes.And, ofcourse, from a very great difference, the stripes will merge to a general grey.
It only works if they stand still.A lot of animals see in white and black but are very sensitive to movement.
And being a herd animal, black and white stripes make it more difficult to distinguish one animal from the next in a large herd. If you imagine a predator that is trying to target a specific zebra in the herd (say a weaker animal), the task of tracking that one animal may become somewhat more tricky. Also, as a predator running amongst a mess of stripes, you would not want to find yourself at the back end of a zebra since, like horses, they kick.
Indeed; although would that, in the strictest terms, class as camouflage?
Camouflage: A form of visual deception, by means of which an animal can elude predators, or a predator may lurk undetected, awaiting prey.(A Dictionary of Animal Behaviour. David McFarland. Oxford University Press, 2006. Oxford Reference Online)