Pipevine Swallowtail - roosting
A couple of years ago we had a long winter season then Spring sprang and we had a mass emergence of Pipevine Swallowtails. Seems like all the PVS out at the ranch all eclosed within about three days. The weather was bright and sunny during they day but as the sun started to set the weather got chilly. I noticed hundreds of PVS coming together to roost in a couple of trees behind the house. This phenomena lasted for only about two weeks.
