White-winged Chough

Corcorax melanorhamphos

ABR description

The following is extracted from the Annual Bird Report for the twelve months to June 2017.

Very common, breeding resident

Conspicuous in groups in woodlands and dry open forests.

General: Reporting rate 8.6% is down on last year (15%), down 23% on the 10YA and 28% on the 30YA. Abundance 0.6977 is down 23% on last year and 16% on 10YA, but just about the same as the 30YA. Both reporting rates and abundance values have declined somewhat in the last year, but they have oscillated around the current values for many years. Seasonal records: winter 23%, spring 33% summer 24% and autumn 20%. Max 67/9 Jun National Arboretum, Cork Plantation GrJ13 (HeS1), average 8.4 and median 7. Breeding: earliest nb/29 Jul North Lyneham Ridge GrK12 (LeM1) and latest dy/12 Apr Bowen Park (KyP1).

GBS: Abundance (A=0.8143) down 8% on last year, up 27% on 10YA and up 72% on 30YA. Average 7.7 and median 6 with max 40/1wk Apr Ainslie Gr L13 (HaS3) and earliest breeding nb/4wk Jul Wamboin GrQ12 (CoK2) and latest dy/2wk Feb Curtin Gr K14 (AjR1).

Abundance

Abundance is the average number of birds of that species per survey. Where the species was observed (presence recorded) but the number of birds seen was not recorded, this is treated as a count of zero.

Abundance by year

This chart shows the abundance of White-winged Chough between 1982 and 2017.

Abundance by month

This chart shows the monthly abundance of White-winged Chough. The blue lines show the abundance for the twelve months to June 2017 and the bars show the average abundance for the period 1982 to 2017.

Abundance by season

This chart shows the seasonal abundance of White-winged Chough. The blue lines show the seasonal abundance for the twelve months to June 2017 and the bars show the average seasonal abundance for the period 1982 to 2017.

Abundance data

Month   Season  
Period Jul Aug Sep Oct Nov Dec Jan Feb Mar Apr May Jun   Winter Spring Summer Autumn   All
All years
  All 0.9 0.9 0.8 0.7 0.6 0.5 0.6 0.6 0.7 0.7 0.7 0.8   0.9 0.7 0.6 0.7   0.7
Previous years
  All previous years 0.9 0.9 0.8 0.7 0.6 0.5 0.6 0.6 0.8 0.7 0.7 0.8   0.9 0.7 0.6 0.7   0.7
  Previous 30 years 0.9 0.9 0.8 0.7 0.6 0.5 0.6 0.6 0.8 0.7 0.7 0.8   0.9 0.7 0.6 0.7   0.7
  Previous 20 years 1.1 1.0 0.8 0.7 0.7 0.5 0.6 0.7 0.8 0.7 0.8 0.9   1.0 0.8 0.6 0.8   0.8
10 year groups
  [2007,2017) 1.3 1.1 0.9 0.8 0.7 0.6 0.6 0.7 0.8 0.8 0.9 1.0   1.1 0.8 0.6 0.8   0.8
  [1997,2007) 0.7 0.7 0.6 0.6 0.5 0.4 0.5 0.5 0.7 0.6 0.6 0.5   0.6 0.6 0.5 0.6   0.6
  [1987,1997) 0.4 0.5 0.5 0.5 0.4 0.6 0.5 0.4 0.6 0.5 0.5 0.6   0.5 0.5 0.5 0.5   0.5
5 year groups
  [2012,2017) 1.3 1.0 0.9 0.8 0.6 0.6 0.6 0.7 0.8 0.8 0.9 1.0   1.1 0.8 0.6 0.8   0.8
  [2007,2012) 1.2 1.4 1.0 0.8 1.0 0.6 0.9 0.8 0.9 0.8 0.8 1.0   1.1 0.9 0.7 0.9   0.9
  [2002,2007) 0.7 0.9 0.7 0.7 0.6 0.4 0.5 0.5 0.8 0.6 0.6 0.5   0.7 0.6 0.5 0.7   0.6
  [1997,2002) 0.7 0.6 0.6 0.5 0.5 0.5 0.6 0.4 0.6 0.5 0.5 0.6   0.6 0.6 0.5 0.6   0.5
  [1992,1997) 0.8 0.9 1.0 0.8 0.6 1.3 0.7 0.4 0.8 0.8 0.9 0.8   0.9 0.8 0.8 0.8   0.8
  [1987,1992) 0.2 0.3 0.3 0.3 0.3 0.3 0.4 0.3 0.4 0.4 0.3 0.5   0.3 0.3 0.3 0.4   0.3
Year
  2017 1.0 0.8 0.8 0.8 0.7 0.5 0.5 0.7 0.5 0.6 0.6 1.0   0.9 0.8 0.6 0.6   0.7
  2016 1.6 1.0 0.9 1.0 0.9 0.7 0.7 0.6 1.0 0.8 0.9 1.1   1.2 0.9 0.7 0.9   0.9
  2015 1.2 1.3 1.2 0.8 0.7 0.6 0.5 0.7 0.6 1.1 1.3 1.2   1.2 0.9 0.6 1.0   0.9
  2014 1.0 0.9 0.6 0.6 0.4 0.7 0.6 0.9 1.0 0.9 0.6 0.7   0.8 0.6 0.7 0.9   0.7
  2013 1.3 0.9 0.6 0.6 0.4 0.4 0.5 0.7 0.6 0.5 0.6 0.8   1.0 0.5 0.5 0.5   0.6
  2012 1.1 0.8 0.6 0.7 0.6 0.5 0.5 0.8 0.7 0.6 0.8 0.9   0.9 0.7 0.5 0.7   0.7
  2011 1.4 0.8 1.1 1.0 0.8 0.3 0.7 0.5 0.6 0.5 0.5 0.5   0.8 1.0 0.5 0.5   0.7
  2010 1.8 1.5 0.9 0.8 1.1 0.6 0.9 0.9 1.2 0.3 1.0 1.2   1.4 0.9 0.7 0.8   0.9
  2009 1.5 1.6 1.1 0.9 1.1 0.6 1.0 1.2 1.1 1.5 0.6 1.1   1.3 1.0 0.9 1.2   1.1
  2008 0.7 1.7 1.4 0.7 0.8 0.6 1.6 0.8 0.9 0.8 0.8 1.3   1.2 0.9 0.9 0.8   0.9
  2007 0.6 1.3 0.6 0.7 1.1 0.9 0.7 1.0 0.8 1.1 1.7 1.0   1.0 0.7 0.8 1.1   0.9
  2006 1.3 1.3 0.8 1.0 0.7 0.3 0.7 0.7 1.3 0.6 0.5 0.6   1.0 0.9 0.6 1.0   0.9
  2005 0.8 0.9 0.8 0.5 0.5 0.7 0.6 0.8 1.0 0.4 0.3 0.3   0.6 0.6 0.7 0.6   0.6
  2004 0.3 0.8 0.8 0.9 0.4 0.2 0.3 0.5 0.7 0.9 0.9 0.4   0.5 0.7 0.3 0.8   0.6
  2003 0.7 0.7 0.5 0.4 0.5 0.4 0.3 0.5 0.6 0.5 0.8 0.2   0.5 0.5 0.4 0.6   0.5
  2002 0.7 0.6 0.6 0.2 0.6 0.4 0.6 0.3 0.3 0.6 1.0 0.9   0.8 0.4 0.4 0.6   0.5
  2001 1.0 0.5 0.5 0.4 0.5 0.4 0.6 0.6 0.5 0.7 0.7 0.9   0.8 0.5 0.5 0.6   0.6
  2000 0.6 0.9 0.9 0.6 0.6 0.4 0.5 0.3 0.7 0.5 0.9 0.7   0.7 0.7 0.4 0.7   0.6
  1999 0.3 0.6 0.6 0.7 0.8 1.1 0.8 0.2 1.0 0.5 0.2 0.4   0.5 0.7 0.7 0.6   0.6
  1998 0.0 0.0 0.7 0.4 0.2 0.4 0.6 0.7 0.0 0.4 0.3 0.2   0.1 0.4 0.5 0.2   0.3
  1997 0.2 0.3 0.4 0.4 0.4 0.2 0.6 0.2 0.9 0.2 0.3 0.2   0.2 0.4 0.3 0.4   0.3
  1996 0.3 0.6 1.6 0.5 0.9 1.2 0.3 0.2 0.9 0.5 0.7 0.5   0.5 0.9 0.6 0.8   0.7
  1995 1.0 1.0 0.8 0.5 0.4 2.1 1.1 0.4 0.9 0.6 1.0 2.1   1.3 0.5 1.3 0.8   1.0
  1994 1.6 1.1 1.0 1.9 0.3 1.2 0.7 0.3 0.9 0.3 0.4 0.3   0.9 0.9 0.7 0.5   0.8
  1993 0.5 1.3 0.9 1.1 1.1 1.1 0.6 1.6 0.6 2.1 0.7 0.4   0.8 1.0 1.0 1.1   1.0
  1992 0.6 0.7 0.8 0.6 0.9 0.5 0.4 0.2 0.7 1.0 1.8 0.6   0.6 0.8 0.4 1.2   0.8
  1991 0.2 0.6 0.6 0.7 0.9 1.1 1.8 1.1 1.9 2.3 1.3 2.2   0.7 0.7 1.3 1.8   1.1
  1990 0.2 0.2 0.2 0.1 0.1 0.1 0.6 0.6 0.5 0.5 0.6 1.0   0.3 0.1 0.4 0.6   0.3
  1989 0.2 0.2 0.3 0.3 0.2 0.2 0.2 0.2 0.3 0.2 0.2 0.3   0.2 0.3 0.2 0.2   0.2
  1988 0.2 0.2 0.2 0.2 0.2 0.2 0.2 0.3 0.3 0.2 0.2 0.4   0.2 0.2 0.3 0.2   0.2
  1987 1.9 0.6 0.3 0.3 0.2 0.2 0.2 0.2 0.1 0.2 0.1 0.1   0.2 0.2 0.2 0.2   0.2
  1986 0.7 0.5 0.3 0.6 0.6 0.5 0.4 0.4 1.7 0.1 0.0 0.0   0.4 0.5 0.4 0.6   0.5
  1985 0.8 0.8 0.9 0.5 0.1 0.3 0.6 0.8 0.1 0.7 2.5 0.4   0.7 0.5 0.4 1.0   0.6
  1984 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.7 0.4 0.3 0.7   0.5 0.0 0.0 0.4   0.3
  1983 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 - 0.0 0.0   0.0 0.0 0.0 0.0   0.0
  1982 - 0.0 - 0.0 0.0 0.0 - 0.0 - 0.0 - 0.0   0.0 0.0 0.0 0.0   0.0

Reporting rates

Reporting rate is the proportion of all surveys in which the species was present.

Reporting rate by year

This chart shows the reporting rate of White-winged Chough each year between 1982 and 2017.

Reporting rate by month

This chart shows the reporting rate by month of White-winged Chough. The blue lines show the reporting rate for the twelve months to June 2017 and the bars show the average reporting rate for the period 1982 to 2017.

Reporting rate by season

This chart shows the seasonal reporting rate of White-winged Chough. The blue lines show the seasonal reporting rate for the twelve months to June 2017 and the bars show the average seasonal reporting rate for the period 1982 to 2017.

Reporting rate data

Month   Season  
Period Jul Aug Sep Oct Nov Dec Jan Feb Mar Apr May Jun   Winter Spring Summer Autumn   All
All years
  All 11.9 13.0 15.0 13.4 12.6 10.3 10.6 9.6 10.3 9.2 9.7 9.4   11.2 13.6 10.2 9.8   11.3
Previous years
  All previous years 12.1 13.7 15.3 13.6 13.1 10.7 11.1 10.2 11.1 9.6 10.5 9.6   11.5 14.0 10.7 10.4   11.8
  Previous 30 years 12.1 13.8 15.4 13.7 13.2 10.7 11.2 10.3 11.0 9.6 10.6 9.7   11.6 14.1 10.8 10.4   11.8
  Previous 20 years 11.6 12.8 14.4 12.7 12.4 9.7 10.1 9.2 10.1 8.7 9.5 9.1   10.9 13.2 9.7 9.4   10.9
10 year groups
  [2007,2017) 12.8 12.9 14.6 12.7 12.3 9.6 10.2 9.5 10.4 8.9 10.2 9.7   11.5 13.2 9.8 9.8   11.1
  [1997,2007) 9.6 12.6 14.0 12.7 12.7 9.8 9.6 8.4 9.5 8.3 7.8 7.8   9.6 13.2 9.4 8.6   10.3
  [1987,1997) 13.8 16.8 20.2 19.7 15.9 16.7 17.6 15.6 16.3 14.3 14.7 12.8   14.5 18.5 16.6 15.1   16.3
5 year groups
  [2012,2017) 11.9 11.3 12.6 11.8 10.8 8.9 8.9 8.8 9.9 9.4 9.3 9.4   10.7 11.8 8.9 9.6   10.2
  [2007,2012) 15.5 18.3 19.2 14.2 16.2 11.1 14.9 12.4 11.6 7.8 12.5 10.2   13.2 16.0 12.7 10.2   13.3
  [2002,2007) 10.1 14.9 15.8 13.2 13.0 10.5 9.4 8.5 10.1 8.0 8.1 7.6   10.2 14.1 9.7 8.9   10.9
  [1997,2002) 8.8 9.9 11.8 11.9 12.4 8.9 9.9 8.4 8.6 8.5 7.3 8.1   8.8 12.0 9.1 8.3   9.7
  [1992,1997) 8.0 10.6 13.5 13.9 10.8 11.7 8.2 5.7 8.2 7.3 9.5 6.5   8.5 12.7 8.7 8.3   9.7
  [1987,1992) 16.4 20.2 23.4 22.8 18.4 18.8 22.8 19.3 21.2 18.2 17.4 16.3   17.7 21.4 20.3 18.9   19.7
Year
  2017 10.8 9.4 12.9 11.4 9.3 8.0 7.6 7.1 6.2 6.6 6.2 8.5   9.3 11.2 7.6 6.3   8.6
  2016 12.0 9.8 12.0 12.3 13.4 8.4 8.3 7.4 10.3 8.6 9.1 10.0   10.5 12.5 8.0 9.4   10.0
  2015 10.0 14.5 16.3 11.5 10.9 8.1 6.3 7.9 8.3 9.0 10.6 10.2   11.4 12.8 7.4 9.2   10.1
  2014 12.7 12.6 10.4 11.9 8.5 12.7 10.9 9.7 11.1 10.5 7.7 7.0   9.9 10.8 10.9 10.1   10.5
  2013 16.4 11.3 10.3 12.2 8.2 8.8 11.4 10.0 8.9 8.8 8.4 7.6   11.4 10.6 10.0 8.8   10.1
  2012 10.3 9.4 12.0 10.8 9.8 9.2 9.7 15.6 12.2 12.1 10.2 10.8   10.3 10.9 10.6 11.7   10.9
  2011 13.0 18.4 19.0 17.2 13.3 10.4 16.0 12.3 8.4 5.0 8.0 6.7   10.5 17.0 13.0 7.1   12.0
  2010 26.0 19.3 17.2 15.8 21.1 12.7 13.0 15.3 16.5 6.4 14.7 10.3   15.7 17.4 13.2 12.2   15.0
  2009 13.7 19.8 18.4 15.3 15.6 9.5 16.0 10.0 13.0 11.1 9.9 13.1   14.7 16.2 11.8 11.5   14.0
  2008 13.1 20.9 22.1 10.8 16.1 12.2 22.2 12.0 11.3 9.3 14.4 10.3   13.7 14.6 14.9 10.8   13.6
  2007 14.3 13.0 19.5 12.2 13.5 10.7 10.6 13.0 9.4 7.3 22.0 11.7   12.5 14.6 11.1 11.1   12.5
  2006 13.2 24.3 18.1 15.9 14.9 8.4 10.7 12.6 12.0 7.0 10.1 9.2   13.4 16.3 10.4 10.2   12.9
  2005 8.1 7.5 16.0 13.3 11.0 16.7 10.6 10.9 10.8 8.7 6.5 6.5   7.1 13.9 13.8 8.8   10.9
  2004 9.9 14.5 18.3 16.9 12.2 8.3 8.5 9.1 10.4 8.2 9.7 3.1   9.2 15.9 8.5 9.4   10.9
  2003 12.0 15.1 10.2 9.3 14.7 11.0 11.1 7.1 10.8 8.3 5.4 8.1   11.5 11.4 9.8 8.6   10.3
  2002 8.0 13.6 16.9 9.4 11.5 8.0 6.3 4.6 5.5 7.7 10.6 10.2   10.2 12.5 6.8 7.2   9.2
  2001 12.4 12.7 10.4 10.5 14.8 9.8 8.5 9.8 7.2 10.2 8.7 10.3   11.8 11.5 9.4 8.5   10.2
  2000 8.7 9.8 15.8 13.7 12.5 7.0 11.6 7.6 10.2 8.8 13.6 11.8   10.3 14.0 8.7 10.3   10.8
  1999 11.8 12.4 12.6 13.8 18.2 15.0 10.9 8.6 11.9 9.3 3.4 7.0   9.0 14.8 11.7 8.3   11.0
  1998 0.0 1.9 11.4 7.6 8.0 4.7 5.9 9.4 1.1 7.7 3.7 2.7   1.8 9.1 6.2 3.1   5.9
  1997 2.3 5.2 7.3 11.8 5.1 6.7 9.8 5.3 12.5 3.7 4.4 1.4   2.8 7.6 7.1 5.7   5.9
  1996 4.5 7.4 20.0 14.9 14.8 12.1 4.9 4.7 6.9 6.2 6.9 4.6   5.6 16.2 7.3 6.7   9.3
  1995 7.5 8.5 10.7 7.9 6.4 11.5 14.2 6.3 8.2 5.6 11.7 11.7   9.2 8.2 11.4 8.0   9.1
  1994 13.7 11.7 16.2 25.6 8.8 15.2 5.9 5.2 8.0 6.1 5.0 3.4   8.8 15.5 8.1 6.4   9.9
  1993 8.2 16.7 9.7 16.0 12.1 13.0 6.1 12.5 11.1 10.0 7.8 7.2   11.2 12.8 10.2 9.6   11.0
  1992 7.7 11.1 11.8 10.6 13.9 7.9 6.9 2.4 7.0 11.9 15.8 5.0   7.8 12.0 6.2 11.7   9.8
  1991 3.1 9.6 9.3 9.7 11.3 12.2 14.3 12.0 19.0 20.3 14.8 14.0   7.4 10.1 12.8 18.0   11.4
  1990 20.0 20.0 18.3 11.2 7.5 9.7 22.2 14.1 13.6 6.0 8.2 14.5   19.0 12.1 15.3 9.4   14.6
  1989 21.4 22.4 24.9 27.3 24.7 22.6 24.5 18.0 25.6 20.5 21.1 14.3   19.8 25.8 21.7 22.4   22.5
  1988 16.4 22.4 24.2 25.4 19.4 21.5 23.6 28.6 27.7 21.9 22.2 22.7   20.5 22.7 24.4 24.0   22.8
  1987 27.3 13.3 28.3 25.4 19.4 17.5 23.1 16.7 14.8 17.3 14.4 12.7   13.5 23.9 18.9 15.6   19.2
  1986 11.5 13.2 11.3 13.9 14.9 11.8 8.7 5.6 19.4 5.9 6.9 2.9   9.1 13.2 8.6 9.9   10.5
  1985 10.0 10.0 13.5 8.1 1.8 8.3 12.5 5.9 18.2 10.5 30.0 7.1   9.1 7.7 8.2 17.5   9.1
  1984 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 7.4 5.9 9.7 8.8   6.1 0.0 0.0 7.6   4.2
  1983 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 - 0.0 0.0   0.0 0.0 0.0 0.0   0.0
  1982 - 0.0 - 0.0 0.0 0.0 - 0.0 - 0.0 - 0.0   0.0 0.0 0.0 0.0   0.0

Breeding data

Breeding records by month

Number of breeding records by breeding code and month, 2017 and all years
Breeding code Jul Aug Sep Oct Nov Dec Jan Feb Mar Apr May Jun
2017
  Breeding (BLA code) 0 0 0 2 0 0 0 0 0 0 0 0
  Carrying Food 0 0 0 0 2 0 0 0 0 0 0 0
  Copulating 0 0 0 0 0 0 0 0 0 0 0 0
  Display 0 0 0 0 0 0 0 0 0 0 0 0
  Dependent young 0 0 2 20 18 9 2 3 2 1 0 0
  Faecal sac 0 0 0 0 0 0 0 0 0 0 0 0
  Inspecting hollow 0 0 0 0 0 0 0 0 0 0 0 0
  Nest building 1 3 0 2 0 2 0 0 2 0 0 0
  Nest with eggs 0 0 0 0 0 0 0 0 0 0 0 0
  Nest with young 0 0 1 9 11 4 3 0 0 0 0 0
  On/leaving nest 0 2 7 15 3 2 4 0 0 0 0 0
All years
  Breeding (BLA code) 0 1 2 14 3 3 2 1 1 0 0 0
  Carrying Food 0 1 1 13 8 2 4 0 0 0 0 0
  Copulating 0 0 0 0 0 0 0 0 0 0 0 0
  Display 0 0 0 0 0 0 0 0 0 0 0 0
  Dependent young 0 1 7 107 73 57 35 21 13 3 1 0
  Faecal sac 0 0 0 0 0 0 0 0 0 0 0 0
  Inspecting hollow 0 0 0 0 0 0 0 0 0 0 0 0
  Nest building 7 26 36 25 8 16 5 7 7 1 0 1
  Nest with eggs 0 3 10 8 5 0 1 0 0 0 0 0
  Nest with young 0 3 27 114 47 21 13 1 1 1 0 0
  On/leaving nest 5 15 88 110 30 22 16 6 3 0 2 1

Breeding records by year

Average number of breeding records per period by breeding code
Period Breeding (BLA code) Carrying Food Copulating Display Dependent young Faecal sac Inspecting hollow Nest building Nest with eggs Nest with young On/leaving nest
All years
  All 0.8 0.8 0.0 0.0 8.8 0.0 0.0 3.9 0.8 6.3 8.3
Previous years
  All previous years 0.7 0.8 0.0 0.0 7.5 0.0 0.0 3.7 0.8 5.7 7.6
  Previous 30 years 0.8 0.9 0.0 0.0 8.6 0.0 0.0 4.3 0.9 6.7 8.8
  Previous 20 years 1.2 1.1 0.0 0.0 9.6 0.0 0.0 4.0 0.0 6.6 12.7
10 year groups
  [2007,2017) 1.5 1.6 0.0 0.0 15.7 0.0 0.0 6.2 0.0 10.4 18.4
  [1997,2007) 1.0 0.5 0.0 0.0 3.5 0.0 0.0 1.7 0.0 2.8 6.9
  [1987,1997) 0.0 0.6 0.0 0.0 6.6 0.0 0.0 5.0 2.7 6.8 1.0
5 year groups
  [2012,2017) 1.2 2.2 0.0 0.0 21.4 0.0 0.0 8.2 0.0 11.0 21.4
  [2007,2012) 1.8 1.0 0.0 0.0 10.0 0.0 0.0 4.2 0.0 9.8 15.4
  [2002,2007) 1.4 0.8 0.0 0.0 3.6 0.0 0.0 2.2 0.0 3.2 8.0
  [1997,2002) 0.6 0.2 0.0 0.0 3.4 0.0 0.0 1.2 0.0 2.4 5.8
  [1992,1997) 0.0 0.2 0.0 0.0 2.6 0.0 0.0 1.6 0.0 2.2 1.8
  [1987,1992) 0.0 1.0 0.0 0.0 10.6 0.0 0.0 8.4 5.4 11.4 0.2
Year
  2017 2.0 2.0 0.0 0.0 57.0 0.0 0.0 10.0 0.0 28.0 33.0
  2016 0.0 4.0 0.0 0.0 46.0 0.0 0.0 11.0 0.0 19.0 34.0
  2015 1.0 2.0 0.0 0.0 17.0 0.0 0.0 7.0 0.0 14.0 28.0
  2014 2.0 1.0 0.0 0.0 14.0 0.0 0.0 5.0 0.0 7.0 19.0
  2013 1.0 2.0 0.0 0.0 9.0 0.0 0.0 11.0 0.0 5.0 10.0
  2012 2.0 2.0 0.0 0.0 21.0 0.0 0.0 7.0 0.0 10.0 16.0
  2011 1.0 2.0 0.0 0.0 16.0 0.0 0.0 4.0 0.0 7.0 23.0
  2010 0.0 1.0 0.0 0.0 7.0 0.0 0.0 4.0 0.0 10.0 13.0
  2009 2.0 1.0 0.0 0.0 12.0 0.0 0.0 4.0 0.0 18.0 13.0
  2008 1.0 0.0 0.0 0.0 9.0 0.0 0.0 8.0 0.0 8.0 22.0
  2007 5.0 1.0 0.0 0.0 6.0 0.0 0.0 1.0 0.0 6.0 6.0
  2006 3.0 1.0 0.0 0.0 7.0 0.0 0.0 2.0 0.0 9.0 10.0
  2005 0.0 1.0 0.0 0.0 4.0 0.0 0.0 2.0 0.0 3.0 10.0
  2004 0.0 0.0 0.0 0.0 0.0 0.0 0.0 2.0 0.0 0.0 12.0
  2003 0.0 0.0 0.0 0.0 3.0 0.0 0.0 2.0 0.0 1.0 6.0
  2002 4.0 2.0 0.0 0.0 4.0 0.0 0.0 3.0 0.0 3.0 2.0
  2001 2.0 1.0 0.0 0.0 6.0 0.0 0.0 4.0 0.0 4.0 3.0
  2000 1.0 0.0 0.0 0.0 4.0 0.0 0.0 0.0 0.0 3.0 7.0
  1999 0.0 0.0 0.0 0.0 6.0 0.0 0.0 2.0 0.0 3.0 14.0
  1998 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 1.0 3.0
  1997 0.0 0.0 0.0 0.0 1.0 0.0 0.0 0.0 0.0 1.0 2.0
  1996 0.0 0.0 0.0 0.0 4.0 0.0 0.0 4.0 0.0 1.0 3.0
  1995 0.0 0.0 0.0 0.0 2.0 0.0 0.0 2.0 0.0 0.0 1.0
  1994 0.0 1.0 0.0 0.0 5.0 0.0 0.0 1.0 0.0 2.0 2.0
  1993 0.0 0.0 0.0 0.0 0.0 0.0 0.0 1.0 0.0 5.0 1.0
  1992 0.0 0.0 0.0 0.0 2.0 0.0 0.0 0.0 0.0 3.0 2.0
  1991 0.0 0.0 0.0 0.0 3.0 0.0 0.0 0.0 1.0 2.0 1.0
  1990 0.0 0.0 0.0 0.0 2.0 0.0 0.0 0.0 3.0 2.0 0.0
  1989 0.0 3.0 0.0 0.0 11.0 0.0 0.0 21.0 6.0 21.0 0.0
  1988 0.0 0.0 0.0 0.0 16.0 0.0 0.0 12.0 8.0 21.0 0.0
  1987 0.0 2.0 0.0 0.0 21.0 0.0 0.0 9.0 9.0 11.0 0.0
  1986 0.0 0.0 0.0 0.0 1.0 0.0 0.0 0.0 0.0 0.0 1.0
  1985 0.0 0.0 0.0 0.0 2.0 0.0 0.0 0.0 0.0 0.0 1.0
  1984 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0
  1983 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0
  1982 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0

Distribution map

Distribution - 2017

This map shows the observed distribution of the White-winged Chough for 2017.

The red circles are the grid cells where White-winged Chough have been reported.

The transparency of the red circles indicate how many surveys sheets were submitted for that grid cell; the darker the red the more reliable the data. Of the 315 grid cells with reports, 83 had only one sheet; an example is grid number A9.

The size of the circle represents the reporting rate. The maximum reporting rate for White-winged Chough was 100.0% (eg grid number A9) and the minimum was 1.0% (eg grid number K15).

Distribution - all years

This map shows the observed distribution of the White-winged Chough for all years.

The red circles are the grid cells where White-winged Chough have been reported.

The transparency of the red circles indicate how many surveys sheets were submitted for that grid cell; the darker the red the more reliable the data. Of the 703 grid cells with reports, 55 had only one sheet; an example is grid number C10.

The size of the circle represents the reporting rate. The maximum reporting rate for White-winged Chough was 100.0% (eg grid number C10) and the minimum was 0.2% (eg grid number S13).

Breeding map

Breeding - 2017

This map shows the breeding distribution of the White-winged Chough for 2017.

The red circles are the grid cells where breeding activity for White-winged Chough have been reported.

The size of the circle represents the number of reports.

Breeding - all years

This map shows the breeding distribution of the White-winged Chough for all years.

The red circles are the grid cells where breeding activity for White-winged Chough have been reported.

The size of the circle represents the number of reports.