I have photographed using flash and without flash from different angles to produce the same pattern that too on both sides of the wing and interestingly the blue colour spread gradually from both ends of the band of FW http://www.flickr.com/photos/balakrishnan_valappil/5131836964/ I observed the butterfly inside a room under artificial lighting so the colour is not a result of any form of polarisation,interference or refraction as all those phenomena depend on lightsource and angles of incidence I have seen and photographed specimens wet in Rain but no colour changes observed has anybody noticed the orange colour in museum specimen? it may be something connected with the physical changes of the scales of the wings when the blood is pumped in anyway it could be anything, a matter to be researched
Balakrishnan Valappil Civil Engineering Consultant NEST Malappuram PO 676505 KERALA Mobile:09446587033 Flickr Photostream http://www.flickr.com/photos/balakrishnan_valappil --- On Tue, 12/21/10, Kishen Das <[email protected]> wrote: From: Kishen Das <[email protected]> Subject: Re: [ButterflyIndia] Interesting Colour change in Malabar banded Peacock... To: [email protected] Date: Tuesday, December 21, 2010, 11:11 AM I believe its the wetness of wings, as the sun rays travel from air and get reflected at water and wings that have different refractive indices, creating this visual spectacle. It disappears as the wings get dried up !!! Has any of you seen this in older specimens? Kishen On Sat, Dec 18, 2010 at 8:00 PM, balakrishnan valappil <[email protected]> wrote: wow! It is a newly emerged specimen! I have observed this before and have already posted in the group check it out http://www.flickr.com/photos/balakrishnan_valappil/5131270941/ Balakrishnan Valappil Civil Engineering Consultant NEST Malappuram PO 676505 KERALA Mobile:09446587033 Flickr Photostream http://www.flickr.com/photos/balakrishnan_valappil --- On Thu, 12/16/10, hemant ogale <[email protected]> wrote: From: hemant ogale <[email protected]> Subject: [ButterflyIndia] Interesting Colour change in Malabar banded Peacock... To: [email protected] Date: Thursday, December 16, 2010, 10:23 AM Dear All, On 13.12.2010 we went for Butterflying at near Amboli early in the morning. Around 8:30 we spotted Malabar Banded Peacock resting on a shrub at 2.5 ft. As the sunlight fall on it, he opened the wings fully...we got surprised when we saw the colour of the wings on UP side...here is the series of colour pattern change photographed during 15 minutes... http://www.flickr.com/photos/9403...@n08/sets/72157625485332751/ Hope you will enjoy it... Regards.. Hemant Ogale -- Enjoy
