I saw several of these at Swan Harbor Farms in Harford County, MD on July 24th, 2010.

This Common Buckeye was at Cape May, NJ on July 30th, 2010.

This one was seen in Harford County, MD on August 21st, 2010.

I saw this Buckeye at Bombay Hook NWR, DE on September 5th, 2010.

I saw this one near Turkey Point in Cecil County, MD on September 25th, 2010.

And this one was at Swan Harbor later that day.

I saw these at Turkey Point on September 10th, 2011.

These were at Harford Glen on July 29th, 2012.

I saw this one at Perryman Park on July 19th, 2015.

This Buckeye was at Swan Harbor on September 4th, 2016.