Mark and others, Though I've only been butterflying since about 1994 now, I do remember one other time when Pipevine Swallowtails appeared in the area in numbers and interestingly enough it was at the exact same time of year. The day after the passage of Hurricane Bertha July 11, 1996, I saw my first Pipevine Swallowtail in northern Calvert County. The next day George Jett and I had one (on milkweed?) in Charles County and two days after that I had about 8 nectaring on Mimosa blossums at Bay Ridge near Annapolis. Two were on that same Mimosa today. Also in 1996 I believe Ringler, Stasz, and others had numbers on the Mimosa at Smith Island in late July. At the time I assumed it was the result of the hurricane, but given this year's similar incursion (with a concentration again in southern MD (?)) I tend to doubt that. Interesting though...I still need it for a yardbug but my one Mimosa here only has 15 Tiger Swallowtails, 8 Spicebush, 10 SS Skippers, and a Red-banded Hairstreak. Best, Marshall Iliff miliff@aol.com