Breeding population estimates and standard errors (in thousands) for 10 species of ducks from 1955 - 2000. |
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From Waterfowl Population Status, 2000, U.S. Fish and Wildlife Service |
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Mallard |
Gadwall |
American Widgeon |
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Year |
N |
SE |
N |
SE |
N |
SE |
|||||||
1955 |
877.3 |
457.1 |
651.5 |
149.5 |
3216.8 |
297.8 |
|||||||
1956 |
10452.7 |
461.8 |
772.6 |
142.4 |
3145 |
227.8 |
|||||||
1957 |
9296.9 |
443.5 |
666.8 |
148.2 |
2919.8 |
291.5 |
|||||||
1958 |
11234.2 |
555.6 |
502 |
89.6 |
2551.7 |
177.9 |
|||||||
1959 |
9024.3 |
466.6 |
590 |
72.7 |
3787.7 |
339.2 |
|||||||
1960 |
7371.7 |
354.1 |
784.1 |
68.4 |
2987.6 |
407 |
|||||||
1961 |
7330 |
510.5 |
654.8 |
77.5 |
3048.3 |
319.9 |
|||||||
1962 |
5535.9 |
426.9 |
905.1 |
87 |
1958.7 |
145.4 |
|||||||
1963 |
6748.8 |
326.8 |
1055.3 |
89.5 |
1830.8 |
169.9 |
|||||||
1964 |
6063.9 |
385.3 |
873.4 |
73.7 |
2589.6 |
259.7 |
|||||||
1965 |
5131.7 |
274.8 |
1260.3 |
114.8 |
2301.1 |
189.4 |
|||||||
1966 |
6731.9 |
311.4 |
1680.4 |
132.4 |
2318.4 |
139.2 |
|||||||
1967 |
7509.5 |
338.2 |
1384.6 |
97.8 |
2325.5 |
136.2 |
|||||||
1968 |
7089.2 |
340.8 |
1949 |
213.9 |
2298.6 |
156.1 |
|||||||
1969 |
7531.6 |
280.2 |
1573.4 |
100.2 |
2941.4 |
168.6 |
|||||||
1970 |
9985.9 |
617.2 |
1608.1 |
123.5 |
3469.9 |
318.5 |
|||||||
1971 |
9416.4 |
459.5 |
1605.6 |
123 |
3272.9 |
186.2 |
|||||||
1972 |
9265.5 |
363.9 |
1622.9 |
120.1 |
3200.1 |
194.1 |
|||||||
1973 |
8079.2 |
377.5 |
1245.6 |
90.3 |
2877.9 |
197.4 |
|||||||
1974 |
6880.2 |
351.8 |
1592.4 |
128.2 |
2672 |
159.3 |
|||||||
1975 |
7726.9 |
344.1 |
1643.9 |
109 |
2778.3 |
192 |
|||||||
1976 |
7933.6 |
337.4 |
1244.8 |
85.7 |
2505.2 |
152.7 |
|||||||
1977 |
7397.1 |
381.8 |
1299 |
126.4 |
2575.1 |
185.9 |
|||||||
1978 |
7425 |
307 |
1558 |
92.2 |
3282.4 |
208 |
|||||||
1979 |
7883.4 |
327 |
1757.9 |
121 |
3106.5 |
198.2 |
|||||||
1980 |
7706.5 |
307.2 |
1392.9 |
98.8 |
3595.5 |
213.2 |
|||||||
1981 |
6409.7 |
308.4 |
1395.4 |
120 |
2946 |
173 |
|||||||
1982 |
6408.5 |
302.2 |
1633.8 |
126.2 |
2458.7 |
167.3 |
|||||||
1983 |
6456 |
286.9 |
1519.2 |
144.3 |
2636.2 |
181.4 |
|||||||
1984 |
5415.3 |
258.4 |
1515 |
125 |
3002.2 |
174.2 |
|||||||
1985 |
4960.9 |
234.7 |
1303 |
98.2 |
2050.7 |
143.7 |
|||||||
1986 |
6124.2 |
241.6 |
1547.1 |
107.5 |
1736.5 |
109.9 |
|||||||
1987 |
5789.8 |
217.9 |
1305.6 |
97.1 |
2012.5 |
134.3 |
|||||||
1988 |
6369.3 |
310.3 |
1349.9 |
121.1 |
2211.1 |
139.1 |
|||||||
1989 |
5645.4 |
244.1 |
1414.6 |
106.6 |
1972.9 |
106 |
|||||||
1990 |
5452.4 |
238.6 |
1672.1 |
135.8 |
1860.1 |
108.3 |
|||||||
1991 |
5444.6 |
205.6 |
1583.7 |
111.8 |
2254 |
139.5 |
|||||||
1992 |
5976.1 |
241 |
2032.8 |
143.4 |
2208.4 |
131.9 |
|||||||
1993 |
5708.3 |
208.9 |
1755.2 |
107.9 |
2053 |
109.3 |
|||||||
1994 |
6980.1 |
282.8 |
2318.3 |
145.2 |
2382.2 |
130.3 |
|||||||
1995 |
8269.4 |
287.5 |
2835.7 |
187.5 |
2614.5 |
136.3 |
|||||||
1996 |
7941.3 |
262.9 |
2984 |
152.5 |
2271.7 |
125.4 |
|||||||
1997 |
9939.7 |
308.5 |
3897.2 |
264.9 |
3117.6 |
161.6 |
|||||||
1998 |
9640.4 |
301.6 |
3742.2 |
205.6 |
2857.7 |
145.3 |
|||||||
1999 |
10805.7 |
344.5 |
3235.5 |
163.8 |
2920.1 |
185.5 |
|||||||
2000 |
9470.2 |
290.2 |
3158.4 |
200.7 |
2733.1 |
138.8 |
|||||||
Blue-winged teal |
Nothern shoveler |
Nothern pintail |
|||||||||||
Year |
N |
SE |
N |
SE |
N |
SE |
|||||||
1955 |
5305.2 |
567.6 |
1642.8 |
218.7 |
9775.1 |
656.1 |
|||||||
1956 |
4997.6 |
527.6 |
1781.4 |
196.4 |
10373 |
694.4 |
|||||||
1957 |
4299.5 |
467.3 |
1476.1 |
181.8 |
6606.9 |
493.4 |
|||||||
1958 |
5456.6 |
483.7 |
1383.8 |
185.1 |
6037.9 |
447.9 |
|||||||
1959 |
5099.3 |
332.7 |
1577.6 |
301.1 |
5872.7 |
371.6 |
|||||||
1960 |
4293 |
294.3 |
1824.5 |
130.1 |
5722.2 |
323.2 |
|||||||
1961 |
3655.3 |
298.7 |
1383 |
166.5 |
4218.2 |
496.2 |
|||||||
1962 |
3011.1 |
209.8 |
1269 |
113.9 |
3623.5 |
243.1 |
|||||||
1963 |
3723.6 |
323 |
1398.4 |
143.8 |
3846 |
255.6 |
|||||||
1964 |
4020.6 |
320.4 |
1718.3 |
240.3 |
3291.2 |
239.4 |
|||||||
1965 |
3594.5 |
270.4 |
1423.7 |
114.1 |
3591.9 |
221.9 |
|||||||
1966 |
3733.2 |
233.6 |
2147 |
163.9 |
4811.9 |
265.6 |
|||||||
1967 |
4491.5 |
305.7 |
2314.7 |
154.6 |
5277.7 |
341.9 |
|||||||
1968 |
3462.5 |
389.1 |
1684.5 |
176.8 |
3489.4 |
244.6 |
|||||||
1969 |
4138.6 |
239.5 |
2156.8 |
117.2 |
5903.9 |
296.2 |
|||||||
1970 |
4861.8 |
372.3 |
2230.4 |
117.4 |
6392 |
396.7 |
|||||||
1971 |
4610.2 |
322.8 |
2011.4 |
122.7 |
5847.2 |
368.1 |
|||||||
1972 |
4278.5 |
230.5 |
2466.5 |
182.8 |
6979 |
364.5 |
|||||||
1973 |
3332.5 |
220.3 |
1619 |
112.2 |
4356.2 |
267 |
|||||||
1974 |
4976.2 |
394.6 |
2011.3 |
129.9 |
6598.2 |
345.8 |
|||||||
1975 |
5885.4 |
337.4 |
1980.8 |
106.7 |
5900.4 |
267.3 |
|||||||
1976 |
4744.7 |
294.5 |
1748.1 |
106.9 |
5475.6 |
299.2 |
|||||||
1977 |
4462.8 |
328.4 |
1451.8 |
82.1 |
3926.1 |
246.8 |
|||||||
1978 |
4498.6 |
293.3 |
1975.3 |
115.6 |
5108.2 |
267.8 |
|||||||
1979 |
4875.9 |
297.6 |
2406.5 |
135.6 |
537601 |
274.4 |
|||||||
1980 |
4895.1 |
295.6 |
1908.2 |
119.9 |
4508.1 |
228.6 |
|||||||
1981 |
3720.6 |
242.1 |
2333.6 |
177.4 |
3479.5 |
260.5 |
|||||||
1982 |
3657.6 |
203.7 |
2147.6 |
121.7 |
3708.8 |
226.6 |
|||||||
1983 |
3366.5 |
197.2 |
1875.7 |
105.3 |
3510.6 |
178.1 |
|||||||
1984 |
3979.3 |
267.6 |
1618.2 |
91.9 |
2964.8 |
166.8 |
|||||||
1985 |
3502.4 |
246.3 |
1702.1 |
125.7 |
2515.5 |
143 |
|||||||
1986 |
4478.8 |
237.1 |
2128.2 |
112 |
2739.7 |
152.1 |
|||||||
1987 |
3528.7 |
220.2 |
1950.2 |
118.4 |
2628.3 |
159.4 |
|||||||
1988 |
4011.1 |
290.4 |
1680.9 |
210.4 |
2005.5 |
164 |
|||||||
1989 |
3125.3 |
229.8 |
1538.3 |
95.9 |
2111.9 |
181.3 |
|||||||
1990 |
2776.4 |
178.7 |
1759.3 |
118.6 |
2256.6 |
183.3 |
|||||||
1991 |
3763.7 |
270.8 |
1716.2 |
104.6 |
1803.4 |
131.3 |
|||||||
1992 |
4333.1 |
263.2 |
1954.4 |
132.1 |
2098.1 |
161 |
|||||||
1993 |
3192.9 |
205.6 |
2046.5 |
114.3 |
2053.4 |
124.2 |
|||||||
1994 |
4616.2 |
259.2 |
2912 |
141.4 |
2972.3 |
188 |
|||||||
1995 |
5140 |
253.3 |
2854.9 |
150.3 |
2757.9 |
177.6 |
|||||||
1996 |
6407.4 |
353.9 |
3449 |
165.7 |
2735.9 |
147.5 |
|||||||
1997 |
6124.3 |
330.7 |
4120.4 |
194 |
3558 |
194.2 |
|||||||
1998 |
6398.8 |
332.3 |
3183.2 |
156.5 |
2520.6 |
136.8 |
|||||||
1999 |
7149.5 |
364.5 |
3889.5 |
202.1 |
3057.9 |
230.5 |
|||||||
2000 |
7431.4 |
425 |
3520.7 |
197.9 |
2907.6 |
170.5 |
|||||||
Canvasback |
Scaup |
Green-winged teal |
|||||||||||
Year |
N |
SE |
N |
SE |
N |
SE |
|||||||
1955 |
589.3 |
87.8 |
5620.1 |
582.1 |
1807.2 |
291.5 |
|||||||
1956 |
698.5 |
93.3 |
5994.1 |
434 |
1525.3 |
236.2 |
|||||||
1957 |
626.1 |
94.7 |
5766.9 |
411.7 |
1102.9 |
161.2 |
|||||||
1958 |
746.8 |
96.1 |
5350.4 |
355.1 |
1347.4 |
212.2 |
|||||||
1959 |
488.7 |
50.6 |
7037.6 |
492.3 |
2653.4 |
459.3 |
|||||||
1960 |
605.7 |
82.4 |
4868.6 |
362.5 |
1426.9 |
311 |
|||||||
1961 |
435.3 |
65.7 |
5380 |
442.2 |
1729.3 |
251.5 |
|||||||
1962 |
361.2 |
43.8 |
5286.1 |
426.4 |
722.9 |
117.6 |
|||||||
1963 |
506.2 |
74.9 |
5438.4 |
357.9 |
1242.3 |
226.9 |
|||||||
1964 |
643.6 |
126.9 |
5131.8 |
386.1 |
1561.3 |
244.7 |
|||||||
1965 |
522.1 |
52.8 |
4640 |
411.2 |
1282 |
151 |
|||||||
1966 |
663.1 |
78 |
4439.2 |
356.2 |
1617.3 |
173.6 |
|||||||
1967 |
502.6 |
45.4 |
4927.7 |
456.1 |
1593.7 |
165.7 |
|||||||
1968 |
563.7 |
101.3 |
4412.7 |
351.8 |
1430.9 |
146.6 |
|||||||
1969 |
503.5 |
53.7 |
5139.8 |
378.5 |
1491 |
103.5 |
|||||||
1970 |
580.1 |
90.4 |
5662.5 |
391.4 |
2182.5 |
137.7 |
|||||||
1971 |
450.7 |
55.2 |
5143.3 |
333.8 |
1889.3 |
132.9 |
|||||||
1972 |
425.9 |
46 |
7997 |
718 |
1948.2 |
185.8 |
|||||||
1973 |
620.5 |
89.1 |
6257.4 |
523.1 |
1949.2 |
131.9 |
|||||||
1974 |
512.8 |
56.8 |
5780.5 |
409.8 |
1864.5 |
131.2 |
|||||||
1975 |
595.1 |
56.1 |
6460 |
486 |
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