I forgot to catch up with this. A check of the records for the early bird seen last weekend.
The 9/1 COWA was not the earliest record , instead preceded by 3 much earlier records plus one on the same date as the recent bird. The earliest ever was Aug 16th 2003 in the BBGarden native flora section. Below are the records for your curiosity:
Aug 16th 2003, BBGarden obs Ed Crowne and Jerry Layton
Aug 25th ,1997 Peninsula obs Doug and Robert Gochfeld
Aug 28th, 2003 Nethermead Br west woods, Peter Dorosh
Sept 1st, 2007 Center Dr bridle trail, obs Ed Crowne & Phil Pane
(Note same day as last weekend's bird)