Number observed: 1
Details: According to my field notebook entry for the day: I noted that the bird was singing from the small wooded slope behind my residence at the time. Not in my field notebook, but, rather, a 35+ year old memory (all caveats apply!): I recall that the bird was in a Norway maple, and I also recall thinking that tree phenology was pretty well advanced for the date. I wish I'd been the eBirder then that I am today, for I believe I would have added those notes (assuming I have remembered them correctly) to my checklist.