The last leg of the longest butterfly migration has now been identified
The insects have breeding grounds across central Africa's savannas and highlands
![A photo of a painted lady butterfly resting on a lion paw print in the dirt.](https://i0.wp.com/www.sciencenews.org/wp-content/uploads/2023/04/041023_eg_butterfly-migration_feat.jpg?fit=1030%2C580&ssl=1)
A painted lady butterfly that traveled thousands of kilometers from Europe to Africa, and crossed the Sahara, rests on a lion footprint in Benin.
Roger Vila