As far as I'm concerned, today marks the start of fall. Sure, there have been signs that summer has been coming to a close for the past week or two (reports of a sandpiper at the lake, Eastern Phoebes showing up after being MIA for the entire breeding season, an Empidonax flycatcher or two, a probable Ruby-throated Hummingbird that buzzed me last week, etc). But this morning I saw my first migratory warblers of the season.
A single Canada Warbler (which is a new bird for me at Powderhorn Park) and a single Black-and-white Warbler were foraging in the trees on the hillside next to the tennis courts this morning. Hopefully more will join them over the next couple of days.