Not really sure what it is and I'm curious to know. I wish I could have stopped to take a picture but traffic didn't allow it.
There were 3 of them in a group around Skippack/Worcester
They were about the size of a Smaller adult Turkey but they had the shape of a partridge (slopped back) and were flat grey color with some brighter colors (red/blue?) in their head/beak area.
This is the second time I've seen a group of birds that fit this description. Once in Limerick (Saw 2 during deer season) and again this morning (3).