Three butterfly species from a visit to the Trexler Preserve near Allentown. From left to right, a pearl crescent butterfly atop a flower; an eastern tiger swallowtail butterfly; and a red-spotted purple butterfly.
Three butterfly species from a visit to the Trexler Preserve near Allentown. From left to right, a pearl crescent butterfly atop a flower; an eastern tiger swallowtail butterfly; and a red-spotted purple butterfly.