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Picture of radio tower

Hilltopping for Butterflies
San Bernardino Mountains, California

It is a well known but little understood phenomona that butterflies will gather at the tops of hills and mountain peaks. The theory is that they do this in order to find mates during the mating season. Wherever you find radio towers on hilltops is a good place to look, if you can get access. These kinds of areas are usually cleared and flat, which makes for easier collecting. On this peak, at about 8,000 feet in elevation, we saw a few Papilio indra, Papilio bairdii, Papilio eurymedon, Papilio rutulus, and Euphydryas editha augustina. Retired Guy on the left, Dave Wikle on the right.

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