Eagle Nature Foundation
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50 Years of Midwinter Bald Eagle Counts
Year Adults Sub adult Immature Unknown Total % Immature 5 year Ave. 10 Year Ave.
of Known Age
1961 470 111 40 621 19.1%
1962 417 59 29 505 12.4%
1963 416 102 7 525 19.7% 18.6%
1964 294 61 130 485 17.2%
1965 580 191 97 868 24.8%
1966 586 156 58 800 21.0% 23.5%
1967 590 188 28 806 24.2%
1968 444 177 50 671 28.5% 28.4%
1969 511 292 3 806 36.4%
1970 543 254 32 829 31.9%
1971 564 225 12 801 28.5%
1972 817 377 46 1240 31.6%
1973 663 279 22 964 29.6% 28.8%
1974 592 176 8 776 22.9%
1975 751 346 34 1131 31.5%
1976 729 296 63 1088 28.9% 29.3%
1977 590 205 25 820 25.8%
1978 977 416 53 1446 29.9% 29.8%
1979 1257 568 41 1866 31.1%
1980 1170 580 57 1807 33.1%
1981 527 237 61 825 31.0%
1982 647 226 60 933 25.9%
1983 379 128 1 508 25.2% 22.8%
*1984 705 146 42 893 17.2%
*1985 600 104 26 730 14.8%
1986 629 386 54 1069 38.0% 28.5%
1987 658 263 38 959 28.6%
1988 563 328 66 957 36.8% 34.1%
1989 169 122 2 293 41.9%
1990 921 311 28 1260 25.2%
1991 962 315 132 1409 24.7%
1992 796 5 353 12 1166 31.0%
1993 1995 13 674 26 2708 25.6% 26.6%
1994 1801 1 618 113 2533 25.6%
1995 1230 9 429 16 1684 26.3%
1996 1369 0 574 21 1964 29.5% 29.3%
1997 2720 38 927 46 3731 26.2%
1998 1063 4 522 8 1597 33.1% 32.0%
1999 1237 26 569 81 1913 32.5%
2000 949 14 591 14 1568 38.9%
2001 2010 9 1062 20 3101 34.8%
2002 1653 27 764 67 2511 32.4%
2003 2277 89 733 60 3159 26.5% 29.3%
2004 2731 157 924 159 3971 28.4%
2005 1181 61 324 72 1638 24.6% 27.3%
2006 1299 42 350 34 1725 23.2%
2007 3033 88 656 47 3824 19.7% 22.4%
2008 3018 96 837 101 4052 23.6%
2009 2192 97 491 50 2830 21.2%
2010 1134 56 304 73 1567 24.1%
Total 53409 832 19327 2365 75933 27.4%
Average 1302.7 20.3 471.4 57.7 1852.0 27.4%
*Not complete counts
Year Adults Sub adult Immature Unknown Total % Immature 5 year Ave. 10 Year Ave.
of Known Age
1961 470 111 40 621 19.1%
1962 417 59 29 505 12.4%
1963 416 102 7 525 19.7% 18.6%
1964 294 61 130 485 17.2%
1965 580 191 97 868 24.8%
1966 586 156 58 800 21.0% 23.5%
1967 590 188 28 806 24.2%
1968 444 177 50 671 28.5% 28.4%
1969 511 292 3 806 36.4%
1970 543 254 32 829 31.9%
1971 564 225 12 801 28.5%
1972 817 377 46 1240 31.6%
1973 663 279 22 964 29.6% 28.8%
1974 592 176 8 776 22.9%
1975 751 346 34 1131 31.5%
1976 729 296 63 1088 28.9% 29.3%
1977 590 205 25 820 25.8%
1978 977 416 53 1446 29.9% 29.8%
1979 1257 568 41 1866 31.1%
1980 1170 580 57 1807 33.1%
1981 527 237 61 825 31.0%
1982 647 226 60 933 25.9%
1983 379 128 1 508 25.2% 22.8%
*1984 705 146 42 893 17.2%
*1985 600 104 26 730 14.8%
1986 629 386 54 1069 38.0% 28.5%
1987 658 263 38 959 28.6%
1988 563 328 66 957 36.8% 34.1%
1989 169 122 2 293 41.9%
1990 921 311 28 1260 25.2%
1991 962 315 132 1409 24.7%
1992 796 5 353 12 1166 31.0%
1993 1995 13 674 26 2708 25.6% 26.6%
1994 1801 1 618 113 2533 25.6%
1995 1230 9 429 16 1684 26.3%
1996 1369 0 574 21 1964 29.5% 29.3%
1997 2720 38 927 46 3731 26.2%
1998 1063 4 522 8 1597 33.1% 32.0%
1999 1237 26 569 81 1913 32.5%
2000 949 14 591 14 1568 38.9%
2001 2010 9 1062 20 3101 34.8%
2002 1653 27 764 67 2511 32.4%
2003 2277 89 733 60 3159 26.5% 29.3%
2004 2731 157 924 159 3971 28.4%
2005 1181 61 324 72 1638 24.6% 27.3%
2006 1299 42 350 34 1725 23.2%
2007 3033 88 656 47 3824 19.7% 22.4%
2008 3018 96 837 101 4052 23.6%
2009 2192 97 491 50 2830 21.2%
2010 1134 56 304 73 1567 24.1%
Total 53409 832 19327 2365 75933 27.4%
Average 1302.7 20.3 471.4 57.7 1852.0 27.4%
*Not complete counts
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