Identifying an Understudied Interface: Preliminary Evaluation of the Use of Retention Ponds on Commercial Poultry Farms by Wild Waterfowl

Table 1

A summary of waterfowl observed on retention ponds associated with commercial poultry farms in Dorchester and Somerset counties, Maryland, from 20 September 2022 to 31 March 2023.

Species	Sites observed	Max observed
Blue-winged teal	2	2
Bufflehead	2	14
Canada goose	6	132
Gadwall	1	1
Hooded merganser	3	12
Mallard	4	16
Northern pintail	1	5
Northern shoveler	2	3
Ruddy duck	1	20
Wood duck	3	2

Values indicate the number of sites at which a given species was observed and the maximum number of individuals from that species observed during a single survey. All data supporting this figure are available from Sullivan et al. [36].