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The Jezebel is a common species of butterfly which often flies high up in the canopy and usually comes lower down only to feed on nectar in flowers. Due to this habit apparently, it has evolved to have a dull upperside and a brilliant underside so that birds below it recognise it immediately while it is in flight and at rest. It advertises with bright colouration to indicate the fact that it is unpalatable due to toxins accumulated as a larvae from eating particular species of host plants.

Here’s a pic shot in daylight dominated with a flash and high shutter to create a dark background.

Here’s another pic shot in the same light conditions as above with more light allowed from the background.