The reintroduction of the large blue has been so successful that Britain lords it over continental Europe, where the butterfly continues to decline. More than half a million eggs are laid in the ...

Blue butterfly eggs are small and easy to miss, said Jacobs. In addition to the rubberweed, their food source, workers are sectioning areas off where the butterflies are known to lay their eggs to ...

A team of volunteers from Berkshire, Buckinghamshire and Oxfordshire Wildlife Trust (BBOWT) recently counted the number of brown hairstreak butterfly eggs at Asham Meads in Oxfordshire.

From this spring, however, the ratio of fertilized eggs decreased dramatically and ... s red list on endangered species, the Ogasawara blue butterfly was categorized as “Critically Endangered ...

For historic populations using balloon vine, females are known to have deposited their eggs on the plant's developing fruit. Upon hatching, the larvae burrowed into the balloon and fed inside until ...