Researchers in the Concord pine barrens capturing frosted elfin butterflies.

Heather Siart, biologist for NH Fish and Game, holds a frosted elfin she just caught in the pine barrens next to the runway at Concord Municipal Airport on Monday, May 21, 2018. This female is laying a green egg, just barely visible on the edge of her body closest to the camera. (GEOFF FORESTER / Monitor staff )» Buy this Image