Stopped off at the Yellow-crowned Night Heron colony on Dead Run, Leakin Park, Baltimore City / County at 1 PM today, Thursday.  The nests are now being obscured by folliage, but 15 of the 18 were seen.  Night Herons were sitting on 11 of these, presumably incubating eggs.  5 more Night Herons were seen in the vicinity.
Paul Kreiss