canberrabirds

Freckled Duck stats

To: "Canberra birds" <>
Subject: Freckled Duck stats
From: "wallaces" <>
Date: Sat, 6 Oct 2012 21:28:05 +1000
The Freckeld Duck is reported in most years, with reports in all but three of the last 31 years. The number reported varies greatly.
 
BirdYear
Number of records
Number Observed
Average Number Observed
Maximum Number Observed
2011 17 60 3.75 10
2010 0
2009 3 3 1.0 1
2008 0
2007 9 38 4.2 14
2006 13 31 2.6 9
2005 9 20 2.2 4
2004 19 47 2.9 7
2003 30 76 3.5 7
2002 27 114 6.0 37
2001 9 40 5.0 23
2000 0
1999 2 27 13.5 26
1998 4 14 3.5 6
1997 6 10 1.7 2
1996 1 3 3.0 3
1995 3 20 6.7 13
1994 21 737 35.1 190
1993 10 250 25.0 82
1992 19 1899 99.9 728
1991 35 750 21.4 217
1990 9 95 11.9 36
1989 13 31 2.4 10
1988 3 21 7.0 14
1987 7 41 5.9 16
1986 10 436 43.6 95
1985 18 986 54.8 470
1984 5 27 5.4 8
1983 2 16 8.0 10
1982 23 478 20.8 116
1981 4 34 8.5 23
Grand Total 331 6304 20.5 728
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