Chasing Butterflies

Driving the back roads of New Hampshire, you might see a couple of men in the their early 60s combing nearby fields.

Longtime friends Richard Gray and David Elberfeld have got a hobby.

Armed with butterfly nets, reference books and a giant red notebook, the two are documenting the state's butterfly and moth populations.

NHPR's Cheryl Senter came across them in a field off Route 4 in Grafton. Click here to view slide show of Butterfly Men