I saw this bird during a Harford Bird Club field trip to Susquehanna State Park, MD on May 19th, 2007.

The next bird was singing in a tree by the junction of Deer Creek and the Susquehanna River in Susquehanna State Park, MD in early May, 2008.

This bird was a highlight of an MOS conference field trip to the Bush Declaration wildlife area on May 30th, 2008.

This Prothonotary Warbler sang and posed for pictures near the Deer Creek footbridge in Susquehanna State Park.

Joyce and I saw this bird near the State Park's mill on May 1st, 2011.

This one was near the Deer Creek bridge on April 26th, 2014.

I saw this one in the same place on May 3rd, 2015.

This bird was there on May 14th, 2017.

And I saw this one by the same bridge on April 19th, 2020.