|Status: Migrant.||Last recorded on site in 2021|
|1987-1991: Possible but not likely||1992-1996: Possible but not likely|
|1997-2001: Confirmed||2002-2006: Confirmed|
|2007-2011: Confirmed||2012-2016: Confirmed|
|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.|
Occurs commonly during migration on ponds throughout the lab. In 1988, a pair remained in the marsh in the center of the ring until the second week of June. One of the pair was seen carrying dead vegetation as if it was building a nest. However, no grebes were seen at the site for the next two months. A male was heard calling on the marsh north-east of the garden club in the summer of 1992. In 1999 apparent breeding pairs were present on flooded pools along Eola Rd. Breeding was eventually confirmed when a chick was found near the buffalo feeders. It presumably, had abandoned the pool not far to the north which had dried up a day so earlier. In 2006, at least one pair bred succesfully on A.E.Sea which had developed a lot of cattails and other aquatic vegetation after nearly drying up during the previous year's drought. A single bird spent the entire winter on the main ring moat near main ring lake in 2004-2005 and again in 2005-2006.
Photographer: Dan Johnson.