Butterflies exhibit striking differences between males and females, a phenomenon called sexual dimorphism. These variations, impacting size, colour, behaviour, and lifespan, are driven by evolutionary ...

Ms. Renkl, a contributing Opinion writer, reports from Nashville on flora, fauna, politics and culture in the American South. The sharp-eyed birds lift into flight the moment you open the door. The ...

Glasswing butterflies may all look alike, but behind their transparent wings hides an evolutionary story full of intrigue. Researchers discovered that while these butterflies appear nearly identical ...

Professor Elizabeth Crone, Department of Evolution and Ecology, checks a non-native milkweed in the San Francisco Bay Area for monarch butterfly eggs and caterpillars. Known for long-distance ...

When folded in rest, the Mission blue butterfly’s wings are grey and dotted with black — no more special than a common house moth’s. Unfolded, this furry insect’s wings are iridescent and azure, ...

More than half of the butterfly species in the UK are in long-term decline for the first time and experts say human actions are to blame. The UK Butterfly Monitoring Scheme, run by a coalition of ...

The following essay is reprinted with permission from The Conversation, an online publication covering the latest research. If the joy of seeing butterflies seems increasingly rare these days, it ...

The Florida white is among the butterflies experiencing the most drastic population loss, according to a new study. U.S. Fish and Wildlife Service via Flickr under CC BY 2.0 Butterfly populations in ...

America’s butterflies are disappearing because of insecticides, climate change and habitat loss, with the number of the winged beauties down 22% since 2000, a new study finds. The first countrywide ...

Two-thirds of studied species declined by more than 10%, the study said. Butterfly populations have dropped by 22% across 554 recorded species in the United States, according to a new study in the ...

Eliza Grames receives funding from the National Science Foundation (DEB 2225092). We found declines in just about every region of the continental U.S. and across almost all butterfly species. Overall, ...