Biofluorescence is widespread in birds-of-paradise, a group of tropical birds famous for their spectacular courtship dances.

Eight different female bird-of-paradise species imaged under white light and also showing biofluorescent regions below. These are counterparts to the species of males shown in the previous figure.

Their elaborate dances, poses, and other rituals accentuate their appearance and put on a phenomenal show for both female birds ... part of the male's time. Birds of paradise are found in New ...

But recently they noticed something new. When female birds of paradise watch males dance, they do so looking down from above, not the traditional viewing angle that we would would see from a hide.

In contrast, female birds-of-paradise showed biofluorescence mainly in the chest and abdomen, with patterns that are much more subtle compared to males and much less common overall. Birds-of ...

This bird measures between 25 and 26 cm, with males reaching 26 cm and females 25 cm. For a bird of paradise, it is small but ...

Female choosiness can result in a positive feedback loop where exaggerated features grow more ornate from generation to generation, even to the point of conflicting with natural selection — a male ...