I was surprised when my fellow butterfly enthusiasts and Garden volunteers told me today about butterflies visiting oozing sap on an oak near the Caboose Parking area and showed me some remarkable photos. Wow.
There were Red Admirals, and Commas, and others taking advantage of the fresh sap, perhaps as a consequence of Yellow-Bellied Sapsuckers drilling into the bark.
One of our garden horticulturists had alerted them to this, having just observed the masses of butterflies.
Hopefully, I'll be able to post a few of their photos!