MADISON, Wis. (AP) — The number of monarch butterflies spending the winter in the western United States has dropped to its ...

Painted lady butterflies are world travelers. The ones we encounter in Europe fly from Africa to Sweden, ultimately returning ...

The natural phenomenon of the iconic monarch butterflies migrating south for the winter is a fascinating one - and it's one ...

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Since a butterfly’s wings retain the isotopic signature of the plants it consumed as a caterpillar, this technique allowed ...

Meet Madera (Mod-er-uh), a quiet and curious little guy who enjoys the simple things in life — like a cozy hidey bed and a ...

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The Western population of the monarch butterfly has declined to a near-record low with fewer than 10,000 found living in ...