Evening Grosbeak  ( Gros-bec errant )

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Coccothraustes vespertinus

Description:    Male Evening Grosbeak
Photo Date:   November 1, 2008

Location:  

Kenabeek, Henwood Township

Photographer:  

Michael Werner

General Notes

The North American population of this species has decreased by 78% in the forty years spanning 1966 to 2006, according to a recent analysis of Christmas Bird Count and Breeding Bird Survey records conducted by National Audubon Society scientists. Though there is always some inherent variability in the source data, there is sufficient data for this species to be able to quantify the change in population with a high level of statistical confidence.

Evening Grosbeak populations in Ontario, however, appear to be relatively stable over the same period of time.

Abundance: Common
Breeding Status: Resident

 

Banding Results

Year

Gillies
Lake

Hilliardton
Marsh

Mountain
Chutes

Year
Total

1990 17     17
1991 48     48
1992 37     37
1993 61     61
1995 18     18
1996 12     12
1997 13     13
1998 46     46
1999 55   18 73
2000 22 1 110 133
2001 13 1 284 298
2002   9 48 57
2003 6 3 98 107
2004 9 7 49 65
2005 1 1 49 51
2006 1 2 8 11
2007   5   5
2008        
2009