Hi Sco....oops surfinbird. I think it mostly likely was a Black Swallowtail. I saw a handfull of them today at Rosetta McClain Gardens in Scarborough. Its one light west of Birchmount and Kingston Rd. off of Kingston Rd. The entrance is just before the lights,at Glen Everst Rd. Had great 30minute look at a Red Fox too,which was digging near an old log,presumably for bugs and grubs. Saw quite a large yellow hairy centipede? millipede? caterpillar? When I get photos back I will post a picture for ID.