|Status: Summer Resident.||Last recorded on site in 2021|
|1987-1991: Likely but not confirmed||1992-1996: Confirmed|
|1997-2001: Confirmed||2002-2006: Confirmed|
|2012-2016: Possible but not likely||2017-2021: Possible but not likely
|The Patuxent web-site provides more general information about this species.|
|At this time of year, this species is expected to be present on site.|
This species has changed its status from an uncommon migrant to a common migrant and summer resident. A number of isolated early or late summer records occurred up until 1990. In the summer of 1991 several birds, including some very young ones were to be regularly found in the heron rookery in the center of the ring. In late June of 1996 cormorants were seen building and occupying nests in this rookery along with egrets and herons. The late start was probably due to an unusually cold spring and early summer.
Photographer: Greg Vogel.