Thursday, April 07, 2005

Radar reveals purpose in butterfly flights

Jim Giles

Miniature transponders show pattern among the erratic fluttering.

Tiny radar devices have revealed patterns in the meandering flights of butterflies: the looping dives are thought to help them to search for food or a home. What's more, the radar technology could help conservationists to find safe havens for the insects amid fragmented agricultural landscapes.

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