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Indicators of the average population status of characteristic species (Beyond our borders)

Graph showing the percent change in the population of birds that overwinter in in four major regions (Canada, The United States, Mexico and Central America and South America)
Indicators of the average population status of species that primarily winter in four major regions
Year Canada United States Mexico, Central America and the Caribbean South America
1970 0 0 0 0
1971 9.6 -0.6 2.3 -0.5
1972 6.2 -2.4 1.3 -4
1973 5.4 -4.1 -1 -5.5
1974 -0.9 -3.8 -3.3 -4.3
1975 3.7 0.5 -2.8 -11.9
1976 1.5 -0.6 -2 -12.2
1977 10.5 -4.6 -3.5 -12.7
1978 0.7 -7.9 -4.5 -10
1979 -0.2 -6.2 -3.6 -14.5
1980 7.6 -5.8 -4.5 -14.9
1981 9.1 -7.6 -5.8 -19.4
1982 2.6 -12 -5.5 -20.4
1983 12 -8 -7.1 -22.8
1984 10.2 -11.7 -6.9 -22.6
1985 8.1 -10.6 -7.5 -26.6
1986 8 -11 -8.7 -28.1
1987 11.3 -9.1 -8.9 -29.3
1988 12.9 -10 -10.8 -30.6
1989 16.2 -9.7 -11.5 -32
1990 18.6 -10 -10.3 -31.8
1991 22.6 -10.5 -10.3 -31.6
1992 21.1 -9.1 -10.5 -32.5
1993 23.6 -10.2 -10.9 -34.6
1994 23 -8.8 -9.7 -36.2
1995 27.8 -7.1 -9.4 -35.9
1996 28.2 -9.8 -11.1 -37.8
1997 24.6 -5.7 -10.7 -40.7
1998 25.8 -5.5 -11.4 -38
1999 31.9 -1 -12.3 -42.2
2000 40.1 -6.5 -13.8 -41
2001 37.8 -9.8 -15.7 -41.4
2002 29.3 -9.5 -16.3 -40.5
2003 36.3 -8.7 -16 -40
2004 51.2 -9.7 -16 -42.1
2005 40.4 -7.6 -13.4 -46.3
2006 47.7 -7.5 -14.8 -53.1
2007 56.8 -3.6 -12.7 -47.3
2008 57.5 -6.2 -13.2 -50.6
2009 63.4 -7.8 -14.7 -54.1
2010 67.5 -9.9 -14.2 -52.5

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