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Data Summary For Brown-headed Cowbird
| Year | Bird | Number Seen | Average Seen | Number of Locations |
| 1941 | Brown-headed Cowbird Molothrus ater |
1 | 1.00 | 1 |
| 1942 | Brown-headed Cowbird Molothrus ater |
1 | 1.00 | 1 |
| 1944 | Brown-headed Cowbird Molothrus ater |
8 | 8.00 | 1 |
| 1945 | Brown-headed Cowbird Molothrus ater |
2 | 2.00 | 1 |
| 1949 | Brown-headed Cowbird Molothrus ater |
6 | 6.00 | 1 |
| 1954 | Brown-headed Cowbird Molothrus ater |
3 | 3.00 | 1 |
| 1956 | Brown-headed Cowbird Molothrus ater |
1 | 1.00 | 1 |
| 1960 | Brown-headed Cowbird Molothrus ater |
1 | 1.00 | 1 |
| 1964 | Brown-headed Cowbird Molothrus ater |
1 | 1.00 | 1 |
| 1965 | Brown-headed Cowbird Molothrus ater |
1 | 1.00 | 1 |
| 1966 | Brown-headed Cowbird Molothrus ater |
13 | 4.33 | 3 |
| 1967 | Brown-headed Cowbird Molothrus ater |
1 | 1.00 | 1 |
| 1969 | Brown-headed Cowbird Molothrus ater |
3 | 1.50 | 2 |
| 1970 | Brown-headed Cowbird Molothrus ater |
4 | 2.00 | 2 |
| 1971 | Brown-headed Cowbird Molothrus ater |
22 | 5.50 | 4 |
| 1972 | Brown-headed Cowbird Molothrus ater |
1 | 1.00 | 1 |
| 1973 | Brown-headed Cowbird Molothrus ater |
25 | 3.57 | 7 |
| 1974 | Brown-headed Cowbird Molothrus ater |
16 | 3.20 | 5 |
| 1975 | Brown-headed Cowbird Molothrus ater |
297 | 49.50 | 6 |
| 1976 | Brown-headed Cowbird Molothrus ater |
19 | 3.80 | 5 |
| 1977 | Brown-headed Cowbird Molothrus ater |
84 | 16.80 | 5 |
| 1978 | Brown-headed Cowbird Molothrus ater |
12 | 3.00 | 4 |
| 1979 | Brown-headed Cowbird Molothrus ater |
2 | 1.00 | 2 |
| 1980 | Brown-headed Cowbird Molothrus ater |
6 | 1.50 | 4 |
| 1981 | Brown-headed Cowbird Molothrus ater |
15 | 5.00 | 3 |
| 1982 | Brown-headed Cowbird Molothrus ater |
3 | 0.75 | 4 |
| 1983 | Brown-headed Cowbird Molothrus ater |
6 | 1.20 | 5 |
| 1984 | Brown-headed Cowbird Molothrus ater |
92 | 15.33 | 6 |
| 1985 | Brown-headed Cowbird Molothrus ater |
16 | 3.20 | 5 |
| 1987 | Brown-headed Cowbird Molothrus ater |
3 | 1.50 | 2 |
| 1988 | Brown-headed Cowbird Molothrus ater |
6 | 2.00 | 3 |
| 1989 | Brown-headed Cowbird Molothrus ater |
11 | 3.67 | 3 |
| 1990 | Brown-headed Cowbird Molothrus ater |
7 | 2.33 | 3 |
| 1991 | Brown-headed Cowbird Molothrus ater |
23 | 3.83 | 6 |
| 1992 | Brown-headed Cowbird Molothrus ater |
1 | 1.00 | 1 |
| 1993 | Brown-headed Cowbird Molothrus ater |
3 | 0.75 | 4 |
| 1994 | Brown-headed Cowbird Molothrus ater |
2 | 1.00 | 2 |
| 1995 | Brown-headed Cowbird Molothrus ater |
11 | 5.50 | 2 |
| 1996 | Brown-headed Cowbird Molothrus ater |
2 | 1.00 | 2 |
| 1998 | Brown-headed Cowbird Molothrus ater |
22 | 22.00 | 1 |
| 1999 | Brown-headed Cowbird Molothrus ater |
36 | 12.00 | 3 |
| 2000 | Brown-headed Cowbird Molothrus ater |
7 | 3.50 | 2 |
| 2001 | Brown-headed Cowbird Molothrus ater |
11 | 3.67 | 3 |
| 2002 | Brown-headed Cowbird Molothrus ater |
13 | 6.50 | 2 |
| 2003 | Brown-headed Cowbird Molothrus ater |
200 | 200.00 | 1 |
| 2004 | Brown-headed Cowbird Molothrus ater |
1 | 1.00 | 1 |
| 2005 | Brown-headed Cowbird Molothrus ater |
43 | 14.33 | 3 |
| 2006 | Brown-headed Cowbird Molothrus ater |
10 | 10.00 | 1 |
| 2007 | Brown-headed Cowbird Molothrus ater |
3 | 1.00 | 3 |
| 2008 | Brown-headed Cowbird Molothrus ater |
45 | 11.25 | 4 |
| 2009 | Brown-headed Cowbird Molothrus ater |
24 | 4.80 | 5 |
| 2010 | Brown-headed Cowbird Molothrus ater |
145 | 29.00 | 5 |
| 2011 | Brown-headed Cowbird Molothrus ater |
11 | 5.50 | 2 |
| Copyright 2008 Minnesota Ornithologists' Union, All Rights Reserved. To learn about the CBC in Minnesota or volunteer for a count, Contact the M.O.U. Coordinator |
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