The Blue Hill is a very special place for many species of our local butterflies. Butterflies congregate on the top of prominent hills to seek out mates and reproduce. This phenomena is known as "hill-topping". The butterflies need wild flowers for nectar, a food source and other plants to seek shelter and to lay eggs, which hatch to become their larval form, caterpillars.
All of the photographs on this page were taken very near the Blue Hill Observatory. These photos are of the small butterflies called hairstreaks, measuring only about 1/2" tall when in their typical closed wing posture.
Many thanks to Don McCasland, Program Director of the Observatory, along with the DCR and Friends of the Blue Hills and all others who help to maintain a beneficial environment for these and other "hill top" creatures.
Please consider discouraging anyone who would try to capture these delicate butterflies, even if the intent is to release them. Many times, they will be injured or killed by netting and handling.
Use instead binoculars and cameras to enjoy and share their beauty.