Breeding status codes were assigned to bird species that may nest in the park, following the convention used in the Breeding Bird Atlas Project for Maryland and the District of Columbia (Robbins, C.S., editor. 1996. Atlas of the Breeding Birds of Maryland and the District of Columbia. University of Pittsburgh Press, 479 p.). Breeding status was coded as "Confirmed" for species for which evidence of nesting in the park has been documented. Breeding status was coded as "Probable" for a species if a pair was observed in suitable nesting habitat within established "safe dates" (the period when the species can be assumed to be on territory), if courtship or copulation was observed, if territorial behavior was observed, or if a singing male was present in the same location on two different days within established safe dates. Breeding status was coded as "Possible" if a species was observed in suitable nesting habitat on only one occasion during established safe dates. Some species that were not observed in a park during the nesting season were also coded as "Possible", if seemingly suitable nesting habitat for the species exists in the park.