#&039;near grazing&039; incidence iridescence

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Yellow peril! Aposematic colouration in Troides butterflies

Yellow peril! Aposematic colouration in Troides butterflies

Common birdwing (Troides helena cerberus) male, nectaring on Lantana, Thailand

I was very pleased to come across this butterfly, the common birdwing, recently. Although it is fairly common, I had not had a chance to try and photograph it before. There are at least 25 subspecies of Troides helena, but because of the location, in northern Thailand, this is almost certainly, Troides helena cerberus(…