tag:blogger.com,1999:blog-4277409168431400444.post5170975583044048787..comments2023-08-04T10:18:38.636+01:00Comments on 3 Valleys Birding: Frost BitternPhil Hillhttp://www.blogger.com/profile/08680592654618544656noreply@blogger.comBlogger2125tag:blogger.com,1999:blog-4277409168431400444.post-13032024056873164522016-12-12T15:22:30.624+00:002016-12-12T15:22:30.624+00:00Amazing mark and had you heard they were brown an...Amazing mark and had you heard they were brown and fairly common at the moment and try looking near water and not in caves or mine shafts.M.Bevanhttps://www.blogger.com/profile/01059942280952928150noreply@blogger.comtag:blogger.com,1999:blog-4277409168431400444.post-91348350355395566832016-12-12T14:32:24.039+00:002016-12-12T14:32:24.039+00:00And I still haven't seen one of the blighters ...And I still haven't seen one of the blighters on the ground or in broad bloody daylight!!!<br />So kingfishers only pretend to be blue. I knew you couldn't trust those slimy buggers.<br />Butterfly wings are known for not being pigmented, but in their case, the colours come from diffraction. If you look at a butterfly or moth wing scale with a microscope, the surface is corrugated and behaves in the same way as rows upon rows of prismatic reflectors. Mark Evanshttps://www.blogger.com/profile/02372785801699168219noreply@blogger.com