Table 1. Atlantic Flyway mute swan mid summer survery results and percent changes between 
survey periods 1986,89,93,96, and 1999, including total adults and cygnets counted.
% Change
State 1986 1989 1993 1996 1999 86-99
Maine 3p 12p 6 8 7 N/A
New Hampshire 5+14p 0 49 30 31 N/A
Vermont 0 0 4 11 0 N/A
Massachusetts 585 565 660 917 986 68.5
Rhode Island 880 1044 1333 1206 1577 79.2
Connecticut 1452 1948 1707 1589 1609 10.8
New York 1815 1966 2069 1644 2429 33.8
New Jersey 529 717 893 1019 1364 157.8
Pennsylvania 74+63p 122 139 85+192p 133 79.7
Delaware 21 1 21 9 27 N/A
Maryland 264 611 2245 2717 3955 1398.1
Virginia 60* 145+94p 231+88p 419 488 713.3
West Virginia 0 4p 2+2p 6+4p 9 N/A
North Carolina 2p 6+14p 29 5 18 800
South Carolina 13p 0 3 0 0 N/A
Georgia 27p 26 N/C N/C 0 N/A
Florida N/C 46 1000p 1000p 1000p N/A
Ontario 15+600p 211+600p 500+600p 600+600p ? ?
Totals 5800+ 7308+ 9888+ 10268+ 12,643+ 118.0
Adults 5113 6481 8743 9258 9348 82.8
Broods 185 262 361 365 441 138.3
Cygnets 687 827 1145 1010 1514 120.4
Cygnets/Brood 3.7 3.2 3.2 2.8 3.4 3.3
% Pop. Young 11.8 11.3 11.8 9.8 12 11.3
% Growth Rate (3 yrs.) 26 35.3 3.8 23.1 22.0
p=private ownership not included in total.
N/C= No count.
N/A=Non Applicable
Mid-Winter Survey 1987 1990 1994 1997 2000
Totals 5200 6741 7229 8907 11,286 117.0
% Growth Rate (3 yrs.) 29.6 7.2 23.2 26.7 21.7