The only remaining eastern population of a rare butterfly lives on a military base in Pennsylvania, and starting this week, ...

The Black-eyed Satyr, Euptychia attenboroughi, is so rare it is only found in the lowland tropical forests of the upper Amazon basin in Venezuela, Colombia, and Brazil. The Black-eyed Satyr is the ...

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A Surrey amateur lepidopterist has shared how his remarkable discovery of a rare butterfly has led to a breakthrough in conservation research. Gareth Tilley discovered a population of one of the UK's ...

Chief executive officer Dr David Gibson said black-veined white butterflies were some of "the rarest animals in the UK at the ...

The St. Francis Satyrs now number around 1,000 and are found in an area of less than 20 acres. Melissa McGaw Nick Haddad is a tall, quick-to-smile Minnesotan. But lest the easy grin fool you, he is ...

This article was published in Scientific American’s former blog network and reflects the views of the author, not necessarily those of Scientific American The once rare brown argus butterfly is on the ...