Scientists are grappling with a stark population decline of the western monarch butterfly after the species’ numbers hit a ...

Monarch butterflies are among the most beloved insects in North America ... our focus has been on the butterflies’ recent health and how their numbers are changing through time. In our view, some ...

The Monarch Ultra introduces viewers to the epic monarch migration — and the local runner who followed the butterflies all ...

Citizen scientists are called on to help with tagging monarch butterflies and find out why their numbers are dropping.

On Tuesday, the Butterfly Pavilion in Westminster and the Government of Mexico are joining forces to protect one of North ...

The U.S. Fish and Wildlife Service proposes listing Monarch butterflies as threatened, seeking public input until March 2025.

The western monarch butterfly is being considered for the endangered species list, but public comment is still being gathered ...

“A significant deterioration in numbers was found, according to the survey respondents,” said Martin Visser on behalf of the Moths and Butterflies of NZ Trust (MBNZT). “We compared the results of this ...

Monarch butterflies (Danaus plexippus ... by riding on storms that blew in from New Caledonia. The species is now part of the roadside scene in these countries and was once known as "the wanderer ...

The collection of monarch butterflies at the Royal Ontario Museum ... Some others can also be seen as part of a temporary exhibition at the museum called Nature in Brilliant Colour.