Age/sex ratios of ducks in State harvests in 1999-2003 hunting seasons

              State and Flyway 1999 2000 2001 2002 2003
Connecticut 0.9 0.8 0.8 1.2 1.0
Delaware 1.1 1.0 1.1 0.9 1.9
Florida --- --- --- --- ---
Georgia 1.1 0.4 0.9 0.6 0.9
Maine 1.2 1.5 1.4 1.1 1.6
Maryland 0.8 0.9 1.0 0.9 1.5
Massachusetts 1.6 1.3 1.7 1.2 1.0
New Hampshire 0.9 1.2 1.7 1.0 1.4
New Jersey 0.6 0.7 1.1 1.0 1.2
New York 1.2 1.2 1.4 1.2 1.4
North Carolina 0.8 1.0 1.0 1.0 1.1
Pennsylvania 0.8 0.9 1.2 0.9 1.0
Rhode Island 1.1 0.8 1.0 0.8 0.7
South Carolina 0.8 1.4 1.6 1.1 1.3
Vermont 1.5 1.6 1.7 1.2 2.1
Virginia 0.8 0.6 0.7 0.7 0.9
West Virginia 1.2 1.2 1.0 0.7 1.1
Atlantic Flyway Total b 0.91 0.95 1.14 0.95 1.26
Alabama 0.7 0.6 0.8 0.7 0.9
Arkansas 0.6 0.5 1.0 0.5 0.8
Illinois 1.0 0.7 1.7 1.1 1.9
Indiana 1.0 0.6 1.3 1.2 1.4
Iowa 1.4 1.2 2.6 1.3 2.0
Kentucky 1.0 0.9 1.1 0.8 1.3
Louisiana 0.8 0.5 0.8 0.4 1.0
Michigan 1.5 1.0 2.0 1.7 2.1
Minnesota 2.1 1.8 2.6 1.5 2.8
Mississippi 0.5 0.4 1.0 0.4 0.8
Missouri 0.8 0.6 1.1 0.8 1.7
Ohio 1.2 1.0 1.3 1.4 1.8
Tennessee 0.9 0.7 1.0 0.7 0.9
Wisconsin 1.8 1.3 3.0 1.7 1.8
Mississippi Flyway Total b 0.87 0.68 1.33 0.90 1.41
Table 1. Preliminary age ratios of mallards in State harvests as determined from Waterfowl Parts
Collection Survey during the 1999-2003 hunting seasons.
Immatures per Adult a
1
State and Flyway 1999 2000 2001 2002 2003
Colorado 0.7 0.6 0.7 0.5 0.9
Kansas 0.6 0.4 0.6 0.5 0.7
Montana 0.7 0.4 0.6 0.6 0.8
Nebraska 0.8 0.7 0.7 0.7 0.8
New Mexico 1.1 0.6 1.0 0.9 1.1
North Dakota 1.1 0.9 1.3 0.9 1.4
Oklahoma 0.5 0.2 0.4 0.3 0.5
South Dakota 0.9 0.8 0.7 1.0 1.3
Texas 0.5 0.5 0.5 0.3 0.4
Wyoming 0.4 0.5 0.5 0.4 0.9
Central Flyway Total b 0.73 0.54 0.70 0.60 0.87
Arizona 0.8 0.8 1.4 0.8 1.4
California 1.5 1.8 1.7 1.5 2.4
Colorado 1.3 1.1 0.9 1.1 1.2
Idaho 0.9 0.8 1.0 1.0 1.4
Montana 0.7 0.7 0.8 0.7 0.9
Nevada 1.5 1.2 1.1 1.6 1.8
New Mexico 1.3 0.4 0.8 0.7 1.0
Oregon 0.8 1.0 1.4 1.4 1.4
Utah 1.2 0.9 1.2 1.2 1.5
Washington 0.7 0.9 1.0 1.0 1.1
Wyoming 1.2 0.6 1.4 1.3 1.8
Pacific Flyway Total b 0.97 1.04 1.22 1.18 1.51
Alaska 5.3 2.4 4.6 3.0 4.1
U.S. Total b 0.87 0.74 1.13 0.88 1.29
a Ratio not shown if based on a sample of less than 20 wings.
b In estimating Flyway and U.S. ratios, the ratio for each state was weighted in proportion to the
estimated harvest in that state as determined from the Harvest Information Program Waterfowl Harvest
Survey.
Table 1. Preliminary age ratios of mallards in State harvests as determined from Waterfowl Parts
Collection Survey during the 1999-2003 hunting seasons.
Immatures per Adult a
2
Species and Flyway 1999 2000 2001 2002 2003
Mallard
Atlantic 0.91 0.95 1.14 0.95 1.26
Mississippi 0.87 0.68 1.33 0.90 1.41
Central 0.73 0.54 0.70 0.60 0.87
Pacific 0.97 1.04 1.22 1.18 1.51
U.S. Total 0.87 0.74 1.13 0.88 1.29
Black duck
Atlantic 1.00 0.82 0.93 1.07 1.12
Mississippi 0.98 0.63 1.76 1.04 1.13
U.S. Total 0.99 0.76 1.09 1.06 1.12
Mottled duck
Atlantic 1.74 0.74 1.26 1.00 1.31
Mississippi 0.86 0.93 1.19 0.88 1.63
Central 0.46 0.38 1.63 1.00 1.82
U.S. Total 0.85 0.73 1.30 0.93 1.60
Gadwall
Atlantic 1.97 0.79 0.83 0.51 0.86
Mississippi 1.28 0.71 1.33 0.68 1.24
Central 1.27 0.55 0.99 0.82 1.62
Pacific 0.92 0.93 0.78 0.99 1.41
U.S. Total 1.26 0.67 1.14 0.75 1.34
American wigeon
Atlantic 1.08 0.50 1.01 0.92 0.90
Mississippi 1.00 0.59 1.16 1.32 1.35
Central 0.70 0.44 0.76 0.90 1.34
Pacific 0.87 0.94 1.02 1.64 1.11
U.S. Total 0.88 0.66 0.98 1.30 1.21
Green-winged teal
Atlantic 2.37 1.20 1.15 1.88 1.83
Mississippi 1.61 1.06 1.98 2.16 1.97
Central 1.32 1.51 1.79 1.81 2.10
Pacific 1.03 1.20 1.03 1.36 1.14
U.S. Total 1.46 1.20 1.56 1.80 1.74
Blue-winged/Cinnamon teal
Atlantic 1.39 0.73 1.34 0.83 1.29
Mississippi 1.88 1.39 2.43 2.00 1.97
Central 1.83 1.74 2.25 1.94 2.69
Pacific 1.22 0.95 1.20 1.09 1.50
U.S. Total 1.79 1.40 2.22 1.78 2.06
Immatures per Adult a,b
Table 2. Preliminary weighted age ratios by species and Flyway during the 1999-2003 hunting seasons.
3
Species and Flyway 1999 2000 2001 2002 2003
Northern shoveler
Atlantic 1.40 0.68 1.35 0.86 1.30
Mississippi 2.17 1.01 1.90 1.06 1.75
Central 1.78 0.69 1.85 1.58 3.07
Pacific 0.95 0.58 0.66 0.82 1.11
U.S. Total 1.50 0.79 1.38 1.05 1.63
Northern pintail
Atlantic 1.18 0.57 1.02 1.32 2.29
Mississippi 1.23 0.90 1.40 1.81 2.58
Central 0.89 0.51 0.86 1.08 1.53
Pacific 0.97 0.80 0.63 0.91 0.97
U.S. Total 1.04 0.76 0.92 1.25 1.57
Wood duck
Atlantic 1.03 1.22 1.20 1.15 1.59
Mississippi 1.35 0.99 2.05 1.67 1.66
Central 1.04 0.63 1.32 1.05 1.07
Pacific 1.24 2.19 1.29 1.24 1.57
U.S. Total 1.23 1.04 1.61 1.43 1.60
Redhead
Atlantic 2.27 0.42 0.47 0.10 0.54
Mississippi 2.99 0.71 1.97 0.21 1.58
Central 1.76 0.42 0.70 0.24 1.64
Pacific 0.82 0.72 0.44 1.11 1.69
U.S. Total 1.92 0.52 0.92 0.31 1.53
Canvasback
Atlantic 0.38 0.38 --- --- 0.56
Mississippi 1.52 0.58 1.43 --- 1.32
Central 1.31 0.53 0.76 --- 1.51
Pacific 0.86 0.75 1.23 --- 1.02
U.S. Total 1.19 0.57 0.99 --- 1.13
Greater scaup
Atlantic 1.00 0.77 1.54 1.66 0.98
Mississippi 2.09 1.54 2.30 2.83 1.37
Central --- --- --- 3.41 ---
Pacific 0.46 1.27 0.48 0.97 0.72
U.S. Total 0.87 1.23 0.91 1.83 0.97
Table 2. Preliminary weighted age ratios by species and Flyway during the 1999-2003 hunting seasons.
Immatures per Adult a,b
4
Species and Flyway 1999 2000 2001 2002 2003
Lesser scaup
Atlantic 0.27 0.34 0.63 0.46 0.77
Mississippi 0.61 0.36 0.59 0.86 1.35
Central 0.89 0.42 1.05 1.33 0.95
Pacific 1.02 1.20 1.64 1.60 1.58
U.S. Total 0.56 0.42 0.74 0.88 1.17
Ring-necked duck
Atlantic 1.11 0.73 1.19 1.11 1.17
Mississippi 1.54 1.27 1.82 1.47 2.09
Central 0.65 0.75 1.08 0.83 0.82
Pacific 1.90 1.52 1.41 1.24 1.44
U.S. Total 1.21 1.03 1.49 1.26 1.53
Common goldeneye
Atlantic 0.52 0.61 0.40 0.91 0.67
Mississippi 1.42 0.27 1.18 0.99 1.18
Central 1.14 0.46 1.15 1.01 0.66
Pacific 0.59 0.56 0.74 1.14 0.71
U.S. Total 0.92 0.48 0.91 1.08 0.82
Bufflehead
Atlantic 0.64 0.47 0.86 1.29 0.78
Mississippi 0.85 0.67 1.44 0.98 1.56
Central 0.50 0.44 0.53 0.82 0.29
Pacific 1.44 0.67 1.30 1.11 0.93
U.S. Total 0.82 0.57 1.11 1.09 1.06
Ruddy duck
Atlantic 1.32 0.61 0.51 0.27 1.49
Mississippi 1.89 1.84 --- --- 1.29
Central 3.72 1.54 5.43 --- ---
Pacific 0.50 0.84 0.65 0.57 1.10
U.S. Total 1.35 1.00 1.35 0.52 1.32
Hooded merganser
Atlantic 0.64 0.71 1.15 0.81 0.77
Mississippi 0.95 0.59 1.24 0.76 1.11
Central 0.73 0.39 0.81 0.71 1.17
Pacific 1.96 1.22 2.07 1.58 2.54
U.S. Total 0.84 0.64 1.18 0.79 1.04
Immatures per Adult a,b
Table 2. Preliminary weighted age ratios by species and Flyway during the 1999-2003 hunting seasons.
5
Species and Flyway 1999 2000 2001 2002 2003
Common merganser
Atlantic 1.41 0.82 1.94 1.40 1.76
Mississippi 0.64 --- --- 0.71 ---
Central --- --- --- 0.63 ---
Pacific 1.21 0.76 1.90 0.80 0.78
U.S. Total 1.02 0.94 1.26 0.97 1.56
Red-breasted merganser
Atlantic 1.38 0.41 0.81 0.89 1.06
U.S. Total 1.18 0.29 1.13 0.90 1.09
Long-tailed duck
Atlantic 0.11 0.42 0.11 0.50 0.53
U.S. Total 0.14 0.49 0.11 0.53 0.69
Common eider
Atlantic 0.57 0.13 0.30 0.25 0.26
U.S. Total 0.57 0.13 0.30 0.39 0.26
Black scoter
Atlantic 1.07 0.19 1.08 0.74 0.92
U.S. Total 1.23 0.44 1.37 0.87 1.05
White-winged scoter
Atlantic --- 0.11 0.99 1.56 2.55
U.S. Total 0.68 0.10 2.02 1.71 2.36
Surf scoter
Atlantic 2.11 0.14 0.35 0.79 1.13
U.S. Total 2.05 0.14 0.40 0.90 1.21
a Ratio not shown if based on a sample of less than 20 wings.
b In estimating Flyway and U.S. ratios, the ratio for each state was weighted in proportion to the
estimated harvest in that state as determined from the Harvest Information Program Waterfowl Harvest
Survey.
Immatures per Adult a,b
Table 2. Preliminary weighted age ratios by species and Flyway during the 1999-2003 hunting seasons.
6
State and Flyway 1999 2000 2001 2002 2003
Connecticut 2.1 1.7 1.8 2.7 2.5
Delaware 1.0 1.5 1.3 1.6 1.6
Florida --- --- --- --- ---
Georgia 1.6 1.8 2.4 2.4 1.6
Maine 1.3 1.9 1.7 1.6 1.7
Maryland 2.8 1.7 2.1 2.2 2.1
Massachusetts 1.7 1.8 1.9 1.5 2.4
New Hampshire 1.9 1.4 1.5 1.6 1.4
New Jersey 2.2 1.5 2.2 2.1 2.1
New York 1.8 1.8 1.7 2.0 1.9
North Carolina 1.7 1.7 1.9 1.8 1.9
Pennsylvania 2.3 2.4 1.9 2.3 2.2
Rhode Island 2.3 1.2 1.5 2.4 2.8
South Carolina 2.0 1.9 1.9 2.5 2.3
Vermont 1.6 1.4 1.6 1.6 2.2
Virginia 2.2 1.9 2.4 1.9 2.0
West Virginia 2.3 2.2 2.7 2.6 2.8
Atlantic Flyway Total b 1.98 1.83 1.91 2.04 2.02
Alabama 2.0 2.6 2.4 1.7 1.9
Arkansas 2.3 2.7 2.3 2.9 3.2
Illinois 2.3 2.5 2.1 3.0 2.8
Indiana 1.7 2.3 2.5 2.0 2.0
Iowa 2.0 1.9 1.7 1.9 2.4
Kentucky 2.1 2.5 1.9 2.0 2.1
Louisiana 1.6 2.3 2.0 2.3 2.1
Michigan 1.8 1.9 2.1 1.8 2.0
Minnesota 1.4 1.5 1.6 1.7 1.7
Mississippi 2.5 2.9 2.5 2.5 2.7
Missouri 2.8 2.8 2.7 2.9 2.3
Ohio 2.3 2.0 2.2 1.8 1.6
Tennessee 2.2 2.3 2.7 2.4 2.2
Wisconsin 1.5 1.9 1.7 1.6 1.5
Mississippi Flyway Total b 2.03 2.35 2.17 2.20 2.22
Table 3. Preliminary sex ratios of mallards in State harvests as determined from Waterfowl Parts
Collection Survey during the 1999-2003 hunting seasons.
Males per Female a
7
State and Flyway 1999 2000 2001 2002 2003
Colorado 2.9 3.1 3.6 3.0 3.3
Kansas 5.4 4.7 5.2 6.1 6.4
Montana 3.0 4.3 3.0 3.7 4.4
Nebraska 3.0 4.0 4.0 4.1 4.3
New Mexico 2.0 2.5 1.7 2.2 2.2
North Dakota 2.1 2.8 2.8 2.5 2.6
Oklahoma 2.6 4.0 3.9 3.4 3.2
South Dakota 2.7 3.5 4.2 3.1 3.3
Teyxas g 2.4 2.5 2.3 2.8 2.7
Central Flyway Total b 2.64 3.20 3.12 3.13 3.30
Arizona 1.9 1.0 2.1 1.7 1.1
California 2.4 2.2 2.3 2.4 2.0
Colorado 2.3 3.3 2.4 3.6 5.8
Idaho 2.2 2.2 2.5 2.3 2.6
Montana 2.9 3.0 3.1 2.4 3.1
Nevada 1.8 1.9 2.3 2.1 1.8
New Mexico 2.0 2.1 4.2 2.0 2.4
Oregon 2.2 2.0 1.7 1.9 2.0
Utah 1.8 2.0 1.8 1.8 1.9
Washington 2.2 2.3 2.2 2.2 2.4
Wyoming 2.6 3.5 2.6 2.0 1.8
Pacific Flyway Total b 2.26 2.21 2.19 2.20 2.23
Alaska 1.2 1.3 1.4 1.2 1.1
U.S. Total b 2.16 2.38 2.31 2.33 2.35
a Ratio not shown if based on a sample of less than 20 wings.
Table 3. Preliminary sex ratios of mallards in State harvests as determined from Waterfowl Parts
Collection Survey during the 1999-2003 hunting seasons.
Males per Female a
b In estimating Flyway and U.S. ratios, the ratio for each state was weighted in proportion to the
estimated harvest in that state as determined from the Harvest Information Program Waterfowl Harvest
Survey.
8
Species and Flyway 1999 2000 2001 2002 2003
Mallard
Atlantic 1.98 1.83 1.91 2.04 2.02
Mississippi 2.03 2.35 2.17 2.20 2.22
Central 2.64 3.20 3.12 3.13 3.30
Pacific 2.26 2.21 2.19 2.20 2.23
U.S. Total 2.16 2.38 2.31 2.33 2.35
Black duck
Atlantic 0.94 0.99 0.99 1.06 0.99
Mississippi 0.75 0.86 0.77 1.10 1.24
U.S. Total 0.86 0.94 0.93 1.07 1.05
Mottled duck
Atlantic 0.54 0.89 1.01 0.79 0.63
Mississippi 1.28 0.94 0.96 0.84 0.73
Central 2.25 1.05 0.83 1.00 1.15
U.S. Total 1.26 0.95 0.93 0.85 0.77
Gadwall
Atlantic 1.27 1.38 1.80 1.67 1.91
Mississippi 1.58 2.03 1.65 1.67 1.83
Central 1.45 1.79 1.62 1.55 1.52
Pacific 1.80 1.79 2.35 1.71 1.72
U.S. Total 1.54 1.92 1.69 1.63 1.72
American wigeon
Atlantic 1.56 2.06 1.46 1.76 1.73
Mississippi 1.66 1.76 1.62 1.58 1.51
Central 1.75 1.90 1.88 1.70 1.52
Pacific 1.74 1.59 1.73 1.47 1.66
U.S. Total 1.70 1.72 1.71 1.56 1.59
Green-winged teal
Atlantic 1.23 1.16 1.43 1.19 1.24
Mississippi 1.70 1.82 1.73 1.49 1.59
Central 1.74 1.70 1.82 1.45 1.61
Pacific 1.81 1.65 1.86 1.74 1.74
U.S. Total 1.66 1.65 1.73 1.50 1.58
Blue-winged/Cinnamon teal
Atlantic 1.20 1.31 1.26 1.40 1.41
Mississippi 1.34 1.21 1.41 1.04 1.08
Central 1.17 1.14 1.36 1.15 1.15
Pacific 1.42 1.48 1.26 1.25 1.27
U.S. Total 1.29 1.20 1.38 1.11 1.12
Males per Female a,b
Table 4. Preliminary weighted sex ratios by species and Flyway during the 1999-2003 hunting seasons.
9
Species and Flyway 1999 2000 2001 2002 2003
Northern shoveler
Atlantic 1.53 1.46 1.59 1.65 1.43
Mississippi 1.51 1.89 1.46 1.95 1.51
Central 1.52 1.62 1.46 1.29 1.24
Pacific 1.54 2.04 2.23 1.98 1.84
U.S. Total 1.52 1.84 1.64 1.75 1.54
Northern pintail
Atlantic 1.50 1.04 1.80 1.35 1.36
Mississippi 1.88 2.23 2.07 1.78 1.68
Central 2.02 2.31 2.04 2.17 1.63
Pacific 2.20 2.02 2.56 2.79 2.57
U.S. Total 2.00 2.01 2.13 2.11 1.91
Wood duck
Atlantic 1.98 1.84 1.80 1.86 1.92
Mississippi 1.71 1.78 1.60 1.55 1.77
Central 1.88 2.02 2.07 2.03 1.78
Pacific 1.80 1.43 1.71 1.44 1.35
U.S. Total 1.80 1.80 1.71 1.66 1.79
Redhead
Atlantic 0.91 1.53 1.19 1.04 1.96
Mississippi 1.16 1.90 1.37 1.54 1.17
Central 1.23 2.29 2.15 1.46 1.28
Pacific 1.56 1.36 2.11 0.94 1.51
U.S. Total 1.23 2.00 1.81 1.37 1.31
Canvasback
Atlantic 1.33 2.21 --- --- 1.66
Mississippi 1.23 2.10 0.80 --- 2.05
Central 1.27 1.28 1.20 --- 0.84
Pacific 1.11 1.67 0.80 --- 1.45
U.S. Total 1.22 1.80 0.97 --- 1.44
Greater scaup
Atlantic 1.24 1.25 0.97 1.09 1.23
Mississippi 0.79 1.24 0.80 1.21 1.27
Central --- --- --- 1.51 ---
Pacific 2.91 1.89 1.88 1.75 1.28
U.S. Total 1.55 1.44 1.35 1.31 1.25
Table 4. Preliminary weighted sex ratios by species and Flyway during the 1999-2003 hunting seasons.
Males per Female a,b
10
Species and Flyway 1999 2000 2001 2002 2003
Lesser scaup
Atlantic 2.48 2.07 2.26 2.39 2.01
Mississippi 1.56 1.59 2.14 1.72 1.79
Central 1.38 1.71 2.20 1.60 1.21
Pacific 1.61 1.60 1.29 1.43 1.37
U.S. Total 1.74 1.66 2.09 1.77 1.66
Ring-necked duck
Atlantic 1.72 1.73 2.03 1.72 2.14
Mississippi 2.26 1.90 1.74 2.12 1.57
Central 2.15 2.34 2.14 2.71 2.49
Pacific 1.91 1.87 2.26 1.38 1.69
U.S. Total 2.04 1.95 1.90 2.02 1.81
Common goldeneye
Atlantic 1.26 1.12 2.84 1.24 1.11
Mississippi 1.02 1.58 1.81 1.04 1.48
Central 1.13 1.84 2.28 1.81 2.00
Pacific 1.66 4.89 1.10 1.73 1.19
U.S. Total 1.23 1.88 1.67 1.32 1.33
Bufflehead
Atlantic 2.22 2.47 2.39 1.45 1.58
Mississippi 1.28 1.28 1.09 1.39 1.12
Central 1.15 2.29 1.48 1.47 1.49
Pacific 1.15 1.22 0.84 1.23 1.57
U.S. Total 1.48 1.70 1.32 1.38 1.33
Hooded merganser
Atlantic 1.91 2.14 2.28 2.13 2.01
Mississippi 1.73 3.06 2.56 3.38 2.39
Central 2.77 2.95 2.07 1.63 3.14
Pacific 1.09 3.21 1.30 0.81 1.14
U.S. Total 1.88 2.67 2.33 2.61 2.23
Common merganser
Atlantic 0.78 0.75 0.65 0.81 0.81
Mississippi 0.72 --- --- 0.70 1.02
Central --- --- --- 1.03 1.73
Pacific 1.24 1.06 1.00 1.38 1.10
U.S. Total 0.84 0.91 0.83 0.85 1.03
Males per Female a,b
Table 4. Preliminary weighted sex ratios by species and Flyway during the 1999-2003 hunting seasons.
11
Species and Flyway 1999 2000 2001 2002 2003
Red-breasted merganser
Atlantic 1.04 1.54 1.71 1.35 1.18
U.S. Total 1.37 0.76 2.22 0.85 1.11
Long-tailed duck
Atlantic 4.17 6.32 11.39 1.88 4.61
U.S. Total 4.17 6.32 11.39 1.86 3.99
Common eider
Atlantic 2.92 1.48 2.65 2.79 1.93
U.S. Total 2.92 1.48 2.65 2.62 1.93
Black scoter
Atlantic 1.57 1.60 1.74 2.38 1.23
U.S. Total 1.79 1.50 2.13 2.22 1.29
White-winged scoter
Atlantic --- 3.01 2.06 1.23 1.07
U.S. Total 0.73 3.87 2.89 1.24 1.02
Surf scoter
Atlantic 0.58 1.50 2.38 1.45 1.05
U.S. Total 0.70 1.39 2.41 1.37 1.04
a Ratio not shown if based on a sample of less than 20 wings.
Table 4. Preliminary weighted sex ratios by species and Flyway during the 1999-2003 hunting seasons.
Male per Female a,b
b In estimating Flyway and U.S. ratios, the ratio for each state was weighted in proportion to the
estimated harvest in that state as determined from the Harvest Information Program Waterfowl Harvest
Survey.
12
Species and Flyway 1999 2000 2001 2002 2003
Canada goose
Atlantic 0.30 0.20 0.32 0.40 0.56
Mississippi 0.28 0.17 0.29 0.61 0.55
Central 0.25 0.27 0.32 0.45 0.53
Pacific 0.25 0.18 0.18 0.51 0.71
U.S. Total 0.27 0.20 0.29 0.49 0.56
Snow goose
Atlantic 0.02 1.76 1.51 0.27 1.13
Mississippi 0.63 0.39 0.74 0.32 0.72
Central 0.46 0.29 0.49 0.32 0.43
Pacific 0.68 0.39 0.30 0.37 0.86
U.S. Total 0.47 0.43 0.64 0.32 0.62
Blue goose
Mississippi 0.36 0.44 0.71 0.21 0.86
Central 0.43 0.53 0.72 0.38 0.58
U.S. Total 0.39 0.48 0.72 0.28 0.76
Ross' goose
Central 2.64 1.04 1.99 0.99 2.22
Pacific 1.06 0.52 0.72 0.69 1.25
U.S. Total 2.23 0.98 1.96 0.95 1.93
Greater white-fronted goose
Mississippi 0.85 0.43 0.66 0.49 0.82
Central 0.74 0.57 0.46 0.49 1.27
Pacific 1.55 0.80 0.65 0.32 0.53
U.S. Total 0.85 0.54 0.57 0.46 0.92
Brant
Atlantic 0.05 1.15 0.51 0.11 0.54
Pacific 0.49 --- 0.21 --- ---
a Ratio not shown if based on a sample of less than 20 tails/wings.
Immatures per Adult a,b
Table 5. Preliminary weighted age ratios by species and Flyway during the 1999-2003 hunting seasons.
b In estimating Flyway and U.S. ratios, the ratio for each state was weighted in proportion to the
estimated harvest in that state as determined from the Harvest Information Program Waterfowl Harvest
Survey.
13