The bright, rich ‘butter’ yellow of the male Brimstone cannot be confused with any other UK butterfly. The female on the other hand, is a very pale yellow, nearly white in colour and can easily be ...

Arnside, Milnthorpe, Cumbria, UK. 1st Apr, 2025. A lovely day brings out this brimstone butterfly to the spring flowers in Cumbria, UK. Credit: John Eveson/Alamy Live News. Picture: Alamy According to ...

The natural world is replete with hermaphrodites, animals that may outwardly appear male or female but have the reproductive organs of both. Their less common cousins are gynandromorphs ...