monarch cluster

Photo By/Credit
Joanna Gilkeson/USFWS
Media Usage Rights/License
Public Domain
Image
Monarch butterflies form new cluster on a nearby Eucalyptus tree after winds shift and disturb their site at the Monarch Butterfly Sanctuary in Pacific Grove, Calif. If environmental conditions like rain or wind change for the worst, monarch butterflies will fly to a new location where they can be protected by tree-cover.