The population wintering in central Mexico's forests occupied 4.42 acres, up from 2.22 acres during the previous winter.

The intricate image offers a candid glimpse into the fragile ecosystem created by droves of Monarch butterflies ... many might be deceived by the trees covered in beautiful monarchs resting ...

PISMO BEACH, Calif. (CN) — In a small tree grove at the south end of Pismo Beach on California's Central Coast, one visitor ...

In the late 1990s the clustered butterflies covered 45 acres of fir trees in their ... in the chrysalis stage. Monarch butterflies only flap their wings around 5 to 12 times per second — much more ...

In the late 1990s the clustered butterflies covered 45 acres of fir trees in their ... in the chrysalis stage. Monarch butterflies only flap their wings around 5 to 12 times per second — much more ...