Butterfly populations in the US shrank by more than a fifth within the space of two decades, according to a new study.

Mountaintops host some of the world's most diverse butterfly species, but climate change could transform these habitats into ...

since the declines are common across species, whereas increases are rare, the study said. "Over the two-decade study period, 33% of individual butterfly species showed significantly declining ...

Butterfly Populations Plummet by 22% in US ... Nine species - about 3% of the total - showed gains. Among some common species, the red admiral declined by 58%, the cabbage white slipped by 50% ...

Among some common species, the red admiral declined ... This means that if we make the world a more hospitable place for butterflies, butterfly species have the capacity to respond very quickly ...