Gloger’s Rule, first proposed in 1833, suggests animals in warm and humid environments often develop darker pigmentation. Darker feathers and fur contain melanin, which can strengthen structures and ...

This phenomenon provides valuable insight into climate change and its impact on evolution. There are exceptions to Bergmann’s rule, such as small burrowing animals that can change their microclimates ...

Rainforest animals are often darker in colour, and this is not a coincidence. A scientific principle known as Gloger’s Rule ...

Have you ever wondered why moose in Alaska are larger than their southern relatives? Have you considered why many Arctic mammals appear bulkier than species living closer to the equator? There’s a ...

Pesquet's parrot (Psittrichas fulgidus) The only member of its genus, and its genus is the only member of the subfamily Psittrichadinae. It is endemic to hill and montane rainforest in New Guinea© ...