Common Grackle  ( Quiscale bronzé )

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Quiscalus quiscula

Description:    Common Grackle
Photo Date:   September 25, 2008

Location:  

Beauchamp Township

Photographer:  

Michael Werner

General Notes

The North American population of this species has decreased by 61% 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.

Abundance: Abundant Earliest observed date:  

Typical arrival date:

March 31
Breeding Status: Breeding Latest observed date:  

Typical departure date:

October 26

 

Banding Results

Year

Gillies
Lake

Hilliardton
Marsh

Mountain
Chutes

Year
Total

1990 1     1
1992 1     1
1997 1 1   2
1998   2   2
1999   14   14
2000 3 73 22 98
2001   57 25 82
2002   88 36 124
2003   52 62 114
2004   84 34 118
2005   66 58 124
2006   138 14 152
2007   67   67
2008        
2009