By analyzing coastal surveys, wind patterns, pollen, and environmental conditions, they confirmed that the butterflies ...

This has helped biologists track their migration routes. Butterflies without such well-defined aggregations are more difficult to track, however. For example, painted lady butterflies often appear ...

In the early 1990s, the Monarch Watch citizen science initiative began tagging butterflies around the Rocky Mountains. Over 2 million monarchs have been tagged, with more than 19,000 recoveries ...

As climate change affects these patterns, the butterflies may face a mismatch between the timing of their migration and the availability of food sources along their route. Additionally ...

After a decade of advocacy, the species could now qualify for federal protections under the Endangered Species Act.

“How do you say that the monarch butterfly is going extinct in the ... dramatic declines in roost sizes over the migration route that were largely due to two main culprits.

Chiu fears that property development in New Territories West and on the mainland have blocked the butterflies' migration routes, but hopes Fung Yuen's work will mean a brighter future.

The monarch butterfly has lost 90% or more of its ... especially along the migration route through California’s Central Valley to the coast. Planting a variety of native plants, including ...