Bd. Watts et Ds. Bradshaw, THE INFLUENCE OF HUMAN DISTURBANCE ON THE LOCATION OF GREAT BLUE HERON COLONIES IN THE LOWER CHESAPEAKE BAY, Colonial waterbirds, 17(2), 1994, pp. 184-186
We examined the influence of man-made structures on the distribution o
f Great Blue Heron (Ardea herodias) colonies in the lower Chesapeake B
ay, Virginia, USA. Colony sites were situated farther from man-made st
ructures and in areas where the density of structures was lower when c
ompared with randomly located sites on tile coastal plain. The spatial
pattern of structures around colony rites relative to random sites su
ggests that the ar ea of influence was restricted to 400-800 m. Area o
f influence was found to vary according to structure type.