• Welcome to BirdForum, the internet's largest birding community with thousands of members from all over the world. The forums are dedicated to wild birds, birding, binoculars and equipment and all that goes with it.

    Please register for an account to take part in the discussions in the forum, post your pictures in the gallery and more.
ZEISS DTI thermal imaging cameras. For more discoveries at night, and during the day.

Search results

thxpress_search_the_forum Search Opus
  1. CornishExile

    Melanism in Butterflies

    This is the best I can find at short notice. Not much help I suspect. Underside of chimney-sweeper Jon
  2. CornishExile

    Melanism in Butterflies

    Completely as an aside from the identification aspect of this thread (I bow to Harry's undoubted expertise), I think I'm right in suggesting that melanism in butterflies is largely stimulated by seasonal environmental extremes, particularly high temperatures during the pupal stage of the life...
Back
Top