North American Butterfly Association
Mercer County Park
Mercer County, NJ
A sunny, somewhat warm day (59-65º F) while exploring Mercer County Park West Picnic Area & East Picnic area plus two nearby areas along the power lines in that area (Caspersen Rowing Center (40.269491, -74.639406) & the end of Bruntsfield Drive (40.266415, -74.617952). Looking for possible extensions of the Falcate orangetip habitat, I found that neither of the latter two places had any of the larval food plant - Hairy Rock Cress - that is found in the park. The East Picnic area and Campground proved to be an area that had a great deal of Hairy Rock Cress and there was at least one Falcate Orangetip (possibly 2, but I am erring on the side of caution as chances were 50-50 that it was a Cabbage White. The Spring Azure was also sighted in that location (40.263017, -74.622082).
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