The leaves of the beech (Fagus grandifolia) are beginning to fall along the Pennypack, in the woods behind the Pennypack Environmental Center.
There is a sugar maple (Acer saccharum) in front of Van Pelt Library at Penn, and the leaves at the bottom of its crown are still green, the ones towards the middle are red, and at the top they have already fallen.
A pair of mallards (Anas platyrhynchos), male and female, were swimming in the Delaware River this afternoon, right next to 30th Street Station.
The sugar maple (Acer saccharum) just south of the Tomb of the Unknown Revolutionary War Soldier in Washington Square is full into its autumn colors today.
It has been a few days since I’ve seen any swifts. I am guessing they have migrated out of town.
The melanistic phase of the Eastern Gray Squirrel (Sciurus carolinensis) is reasonably common in and near the woods along the Wissahickon, yet not present in downtown Philadelphia; the gray-phase is common in both those localities.