Breeding population estimates

Breeding population estimates and standard errors (in thousands) for 10 species of ducks from 1955 - 2000.
From Waterfowl Population Status, 2000, U.S. Fish and Wildlife Service


	Mallard			Gadwall		American Widgeon
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	1664.8	148.1
1976	614.4		70.1	5818.7	348.7	1547.5	134
1977	664		74.9	6260.2	362.8	1285.8	87.9
1978	373.2		41.5	5984.4	403	2174.2	219.1
1979	582		59.8	7657.9	548.6	2071.7	198.5
1980	734.6		83.8	6381.7	421.2	2049.9	140.7
1981	620.8		59.1	5990.9	414.2	1910.5	141.7
1982	513.3		50.9	5532	380.9	1535.7	140.2
1983	526.6		58.9	7173.8	494.9	1875	148
1984	530.1		60.1	7024.3	484.7	1408.2	91.5
1985	375.9		42.9	5098	333.1	1475.4	100.3
1986	438.3		41.5	5235.3	355.5	1674.9	136.1
1987	450.1		77.9	4862.7	303.8	2006.2	180.4
1988	435		40.2	4671.4	309.5	2060.8	188.3
1989	477.4		48.4	4342.1	291.3	1841.7	166.4
1990	539.3		60.3	4293.1	264.9	1789.5	172.7
1991	491.2		66.4	5254.9	364.9	1557.8	111.3
1992	481.5		97.3	4639.2	291.9	1773.1	123.7
1993	472.1		67.6	4080.1	249.4	1694.5	112.7
1994	525.6		71.1	4529	253.6	2108.4	152.2
1995	770.6		92.2	4446.4	277.6	2300.6	140.3
1996	848.5		118.3	4217.4	234.5	2499.5	153.4
1997	688.8		57.2	4112.3	224.2	2506.6	142.5
1998	685.9		63.8	3471.9	191.2	2087.3	138.9
1999	716		79.1	4411.7	227.9	2631	174.6
2000	706.8		81	4026.3	205.3	3193.5	200.1

		Redhead
Year	N		SE

1955	539.9		98.9
1956	757.3		119.3
1957	509.1		95.7
1958	457.1		66.2
1959	498.8		55.5
1960	497.8		67
1961	323.3		38.8
1962	507.5		60
1963	413.4		61.9
1964	528.1		67.3
1965	599.3		77.7
1966	713.1		77.6
1967	735.7		79
1968	499.4		53.6
1969	633.2		53.6
1970	622.3		64.3
1971	534.4		57
1972	550.9		49.4
1973	500.8		57.7
1974	626.3		70.8
1975	831.9		93.5
1976	665.9		66.3
1977	634		79.9
1978	724.6		62.2
1979	697.5		63.8
1980	728.4		116.7
1981	594.9		62
1982	616.9		74.2
1983	711.9		83.3
1984	671.3		72
1985	578.2		67.1
1986	559.6		60.5
1987	502.4		54.9
1988	441.9		66.2
1989	510.7		58.5
1990	480.9		48.2
1991	445.6		42.1
1992	595.6		69.7
1993	485.4		53.1
1994	653.5		66.7
1995	88.5		90.6
1996	834.2		83.1
1997	918.3		77.2
1998	1005.1		122.9
1999	973.4		69.5
2000	926.3		78.1