Australian Raven

Corvus coronoides

ABR description

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

Very common, breeding resident

At home in urban and rural sites, calling from high vantage points and scavenging by shops, schools, parks and roads.

General: The reporting rate 33.0% is down 11% on last year and 15% on the 10YA and 14% on the 30YA. Recorded in all seasons with a slight spring peak 27%. Australian Ravens do not usually flock together in large numbers, with the median being 2 and average this year 2.8. There were 7 records in the 20’s and an unusually large 33/10 Jul JWNR (SmA1). The historical database shows this species is typically nest building between Jun & Oct and then a smattering of breeding records through summer and autumn. Another breeding parameter shows dy is typically between Sep and Jan. This ABR fits some of this pattern with nb from Jul to Sept and dy Oct to Dec.

GBS: Recorded in all weeks at most sites. While group sizes are typically 6 or fewer, the max was 26/Feb Pearce (KrS1). Abundance (A=1.6830) is a little higher than last year, 14% up on the 10YA and 34% up on the 30YA. This species starts breeding very early in the season. Earliest breeding for this reporting year was co/1wk Jul Gleneagles GrI16 (PeH2). Breeding activity would have started well before then, and the last dy/2wk Mar Duffy (HaS3).

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 Australian Raven between 1982 and 2017.

Abundance by month

This chart shows the monthly abundance of Australian Raven. 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 Australian Raven. 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 1.0 0.9 0.8 1.0 0.8 0.8 1.9 0.9 0.9 0.9 0.9 0.9   1.0 0.9 1.2 0.9   1.0
Previous years
  All previous years 1.0 0.9 0.8 1.0 0.8 0.7 2.1 0.9 0.9 0.9 0.9 0.9   0.9 0.9 1.3 0.9   1.0
  Previous 30 years 1.0 0.9 0.8 1.0 0.8 0.7 2.1 0.8 0.9 0.9 0.9 0.9   0.9 0.9 1.3 0.9   1.0
  Previous 20 years 1.0 1.0 0.8 1.0 0.8 0.7 2.3 0.9 0.9 0.9 0.9 1.0   1.0 0.9 1.4 0.9   1.0
10 year groups
  [2007,2017) 1.2 1.1 0.9 1.2 0.9 0.9 0.8 0.9 1.0 0.9 1.1 1.1   1.1 1.0 0.8 1.0   1.0
  [1997,2007) 0.7 0.6 0.6 0.7 0.5 0.5 7.5 0.7 0.7 0.8 0.7 0.7   0.7 0.6 2.7 0.7   1.1
  [1987,1997) 0.9 0.8 0.9 0.7 0.7 0.7 0.7 0.7 0.9 0.9 0.9 0.8   0.8 0.7 0.7 0.9   0.8
5 year groups
  [2012,2017) 1.3 1.2 1.0 1.2 1.0 0.9 0.8 1.0 1.1 1.0 1.1 1.2   1.2 1.1 0.9 1.0   1.0
  [2007,2012) 1.0 0.9 0.8 1.1 0.8 0.7 0.7 0.7 0.8 0.7 0.9 1.0   1.0 1.0 0.7 0.8   0.9
  [2002,2007) 0.7 0.6 0.6 0.7 0.5 0.5 0.6 0.7 0.6 0.8 0.6 0.7   0.7 0.6 0.6 0.7   0.6
  [1997,2002) 0.7 0.6 0.6 0.6 0.6 0.6 15.3 0.8 0.7 0.7 0.8 0.7   0.6 0.6 5.1 0.7   1.8
  [1992,1997) 1.3 1.0 1.3 0.7 0.8 0.9 1.1 0.6 0.9 0.9 1.2 0.7   1.0 0.9 0.9 1.0   0.9
  [1987,1992) 0.7 0.6 0.6 0.7 0.6 0.7 0.5 0.8 0.9 0.9 0.7 0.9   0.7 0.6 0.7 0.8   0.7
Year
  2017 1.4 1.0 0.9 1.0 1.0 1.0 0.8 0.8 0.9 0.9 0.8 0.9   1.1 1.0 0.8 0.9   0.9
  2016 1.3 1.2 1.2 1.3 1.1 1.0 0.9 0.9 1.1 1.0 1.1 1.1   1.2 1.2 0.9 1.1   1.1
  2015 1.9 1.7 1.3 1.4 1.0 1.2 1.0 1.2 1.2 1.0 1.3 1.4   1.6 1.3 1.1 1.2   1.3
  2014 1.3 1.3 0.7 1.2 0.9 0.9 0.9 1.5 1.5 1.2 1.1 1.1   1.2 1.0 1.1 1.3   1.1
  2013 0.8 0.7 0.6 1.0 1.0 0.7 0.6 0.6 0.9 0.6 1.0 1.2   0.9 0.9 0.7 0.8   0.8
  2012 0.8 0.7 0.5 0.8 0.6 0.6 0.5 0.4 0.6 0.7 0.7 0.7   0.7 0.7 0.5 0.7   0.6
  2011 1.2 0.9 0.9 1.3 1.0 0.6 0.5 0.4 0.4 0.7 0.3 0.8   0.9 1.1 0.5 0.5   0.7
  2010 1.3 0.7 0.7 1.1 0.8 1.2 0.9 0.9 0.8 0.6 1.4 1.0   1.0 0.9 1.0 0.8   0.9
  2009 0.7 1.1 0.8 1.1 0.7 0.6 0.7 0.7 0.8 0.7 0.7 1.1   1.0 0.9 0.7 0.7   0.8
  2008 1.0 1.3 1.1 1.1 1.0 0.5 0.9 0.8 1.1 0.8 1.0 1.0   1.1 1.1 0.7 0.9   1.0
  2007 0.7 0.6 0.6 1.2 0.6 0.6 0.6 0.9 0.9 0.8 2.0 1.2   1.0 0.9 0.7 1.1   0.9
  2006 0.8 0.6 0.7 1.3 0.6 0.6 0.8 0.7 0.6 0.7 0.5 0.6   0.7 1.0 0.7 0.6   0.8
  2005 0.9 0.7 0.7 0.4 0.7 0.7 0.7 1.0 0.6 0.7 0.8 0.7   0.8 0.6 0.8 0.7   0.7
  2004 0.6 0.6 0.6 0.5 0.4 0.5 0.5 0.7 0.7 0.8 0.6 0.8   0.7 0.5 0.5 0.7   0.6
  2003 0.5 0.4 0.5 0.3 0.4 0.5 0.3 0.7 0.5 1.2 0.4 0.5   0.5 0.4 0.5 0.7   0.5
  2002 0.9 0.7 0.4 0.5 0.4 0.3 0.7 0.5 0.7 0.5 0.5 0.6   0.8 0.4 0.5 0.6   0.5
  2001 0.9 0.5 0.6 0.6 0.6 0.7 0.4 0.5 0.6 0.9 0.8 0.7   0.7 0.6 0.6 0.7   0.6
  2000 0.9 0.7 0.7 0.6 0.6 0.8 1.2 0.9 1.1 0.7 0.8 1.1   0.9 0.6 1.0 0.9   0.8
  1999 0.2 0.7 0.6 0.7 0.6 0.5 74.6 1.0 0.9 0.6 0.7 0.5   0.5 0.6 23.9 0.7   6.2
  1998 0.1 0.5 0.5 0.5 0.4 0.3 0.7 0.3 0.2 0.4 0.5 0.4   0.4 0.5 0.4 0.3   0.4
  1997 0.4 0.5 0.4 0.3 0.6 0.2 0.6 0.7 0.5 0.7 0.8 0.3   0.4 0.4 0.4 0.7   0.5
  1996 0.7 0.4 0.5 0.4 0.5 0.8 0.7 0.2 0.4 0.8 0.6 0.8   0.6 0.4 0.6 0.6   0.6
  1995 1.0 0.6 0.3 0.7 0.5 0.3 1.1 0.2 1.3 0.7 1.0 1.0   0.8 0.5 0.6 1.0   0.7
  1994 1.5 1.7 1.3 1.2 0.8 1.3 1.6 0.5 1.1 0.9 0.6 0.8   1.3 1.0 1.2 0.9   1.1
  1993 0.8 1.7 4.5 0.7 1.6 1.9 1.4 1.4 1.0 1.4 1.8 0.7   1.1 2.2 1.6 1.4   1.6
  1992 2.7 0.7 1.1 0.9 1.2 0.7 0.6 1.6 0.6 1.3 1.7 0.2   1.3 1.0 0.9 1.2   1.1
  1991 0.8 0.6 0.8 0.5 1.4 1.1 0.6 1.6 1.4 2.2 1.6 1.8   0.9 0.9 1.1 1.7   1.1
  1990 0.7 0.5 0.6 0.6 0.3 0.6 0.3 0.8 2.3 1.2 1.2 1.5   0.8 0.5 0.6 1.6   0.8
  1989 0.7 0.7 0.6 0.7 0.5 0.6 0.6 0.8 0.7 0.9 0.6 1.0   0.8 0.6 0.7 0.7   0.7
  1988 0.5 0.7 0.6 0.7 0.5 0.6 0.5 0.6 0.6 0.7 0.6 0.6   0.6 0.6 0.5 0.6   0.6
  1987 1.1 0.2 0.6 0.6 0.6 0.7 0.6 0.8 0.5 0.6 0.5 0.6   0.6 0.6 0.7 0.6   0.6
  1986 1.3 1.5 0.5 1.6 1.2 1.4 1.0 1.4 3.0 1.3 0.7 1.3   1.4 1.1 1.3 1.6   1.3
  1985 0.4 0.6 0.6 1.0 1.0 1.3 1.9 10.7 1.3 1.3 1.0 1.0   0.6 0.9 3.2 1.2   1.4
  1984 0.0 0.0 0.0 0.0 0.0 0.0 0.6 0.2 0.7 0.7 0.6 0.4   0.3 0.0 0.3 0.7   0.4
  1983 0.0 0.0 0.0 0.1 0.3 0.2 0.0 0.1 0.0 - 0.0 0.0   0.0 0.1 0.1 0.0   0.1
  1982 - 0.0 - 0.0 0.0 0.1 - 0.0 - 0.8 - 0.0   0.0 0.0 0.0 0.8   0.2

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 Australian Raven each year between 1982 and 2017.

Reporting rate by month

This chart shows the reporting rate by month of Australian Raven. 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 Australian Raven. 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 40.7 40.2 39.9 40.9 36.8 32.8 34.3 35.3 36.7 37.8 39.0 38.5   39.6 39.5 34.1 37.7   37.7
Previous years
  All previous years 41.1 41.0 40.6 41.5 37.1 33.0 35.0 36.5 37.6 38.3 41.2 39.9   40.5 40.1 34.7 38.8   38.5
  Previous 30 years 41.1 41.1 40.6 41.5 36.9 33.0 35.0 36.4 37.4 38.0 41.0 40.0   40.6 40.0 34.7 38.6   38.4
  Previous 20 years 39.5 39.2 39.2 40.9 35.0 31.0 34.1 35.3 36.3 36.4 39.5 39.0   39.2 38.9 33.3 37.1   37.1
10 year groups
  [2007,2017) 42.1 40.5 41.1 43.1 38.0 34.7 35.6 36.5 37.9 36.6 40.3 40.9   41.1 41.3 35.6 38.0   38.9
  [1997,2007) 35.0 36.5 35.4 33.4 29.0 24.1 29.0 32.2 32.9 36.0 37.7 34.9   35.4 32.9 27.7 35.1   32.7
  [1987,1997) 46.7 46.6 48.0 45.0 43.0 43.9 40.1 41.4 43.8 46.2 46.7 45.3   46.2 45.1 41.8 45.5   44.7
5 year groups
  [2012,2017) 43.7 41.9 41.4 43.2 39.3 36.2 35.0 36.3 38.1 37.2 39.6 40.9   42.0 41.7 35.7 38.1   39.2
  [2007,2012) 37.5 35.7 40.4 43.0 34.4 31.4 37.8 37.6 37.4 35.0 42.2 40.7   38.8 40.6 35.0 37.5   38.3
  [2002,2007) 36.5 36.5 35.9 34.4 28.7 25.0 28.8 34.1 31.7 38.2 38.9 37.5   36.9 33.4 28.4 35.6   33.5
  [1997,2002) 32.6 36.4 34.8 31.9 29.4 22.9 29.2 30.3 34.4 33.4 36.2 31.3   33.2 32.3 26.9 34.5   31.6
  [1992,1997) 32.9 29.2 33.8 26.8 32.7 26.1 25.8 21.5 27.0 29.9 32.3 25.8   29.1 30.8 24.7 29.6   28.8
  [1987,1992) 53.0 56.0 54.6 54.9 47.9 51.7 48.0 49.0 53.8 55.5 54.1 56.3   55.1 52.3 49.6 54.5   52.8
Year
  2017 37.8 36.4 34.4 36.4 34.4 31.2 30.7 29.9 31.7 34.3 29.6 31.2   34.5 35.2 30.6 31.8   33.0
  2016 44.1 40.6 39.5 43.1 40.7 32.5 29.8 30.7 36.6 34.8 38.4 39.1   41.1 41.3 30.8 36.4   37.1
  2015 43.4 44.3 44.6 43.8 34.3 36.6 34.8 37.0 36.2 36.5 40.6 40.1   42.1 41.4 36.0 37.5   39.1
  2014 42.4 39.9 37.9 46.9 38.5 37.8 40.6 45.7 39.8 39.4 35.7 43.1   42.0 42.5 41.5 38.7   41.2
  2013 44.1 45.7 45.7 41.1 48.7 39.9 39.8 41.1 42.6 43.0 45.2 46.2   45.4 44.5 40.1 43.3   43.0
  2012 43.9 40.2 39.4 41.0 36.1 37.2 34.8 37.6 38.7 37.5 40.6 40.1   41.2 39.4 36.1 38.6   38.7
  2011 38.2 32.0 37.2 44.2 39.4 39.6 46.7 47.0 39.1 38.6 36.7 38.7   37.2 41.4 44.1 38.2   40.5
  2010 43.8 33.3 36.7 42.5 34.9 33.1 37.2 30.6 35.4 28.1 47.1 42.4   40.5 39.2 34.2 34.5   37.3
  2009 37.4 43.8 40.2 43.1 29.0 27.5 34.0 33.3 39.1 36.9 35.9 41.4   40.7 39.3 31.2 37.5   37.7
  2008 39.3 43.5 47.6 42.6 37.6 27.9 38.9 27.8 39.8 32.3 36.9 41.1   41.1 43.2 30.9 35.4   38.7
  2007 27.5 26.9 40.2 42.3 33.1 25.8 28.0 38.3 34.0 38.9 61.8 40.7   35.4 40.1 28.8 41.7   36.6
  2006 38.8 39.8 39.6 43.0 29.2 22.9 34.8 37.8 32.6 37.1 39.1 38.3   38.8 39.1 31.3 35.2   36.4
  2005 31.6 26.2 33.1 20.4 29.7 23.9 27.0 27.2 34.2 42.1 42.8 41.6   35.6 28.4 25.4 39.3   32.5
  2004 34.9 46.7 35.1 34.9 27.3 23.5 23.6 23.2 32.1 35.7 35.0 37.4   38.8 32.6 23.5 34.1   32.5
  2003 33.3 28.8 36.0 31.1 28.9 27.1 25.9 46.7 27.8 43.3 34.1 29.8   30.5 32.1 33.3 35.1   32.9
  2002 42.9 39.0 36.3 33.5 28.5 26.5 31.4 27.0 31.4 31.5 41.2 37.1   39.7 32.8 27.8 33.2   32.9
  2001 40.0 39.2 37.4 38.7 35.8 34.4 29.0 32.5 30.4 41.0 39.9 35.0   38.0 37.4 32.2 35.8   35.9
  2000 34.9 44.4 40.5 34.8 32.9 18.7 28.1 30.0 40.0 33.6 25.5 34.9   38.1 36.0 24.9 34.8   32.7
  1999 32.4 27.8 35.6 32.1 31.2 27.5 35.8 35.0 46.5 32.0 40.3 31.8   30.7 33.1 32.5 39.5   34.4
  1998 16.2 34.0 30.1 16.3 19.5 11.3 25.0 17.0 16.1 30.8 33.3 22.7   24.8 22.6 16.7 22.6   21.5
  1997 17.2 24.1 20.0 21.1 20.5 8.7 23.5 24.6 20.0 22.0 33.3 19.4   19.8 20.5 16.5 24.2   20.2
  1996 28.4 16.0 24.0 19.3 22.2 21.2 20.4 18.8 18.6 26.6 31.0 29.9   24.2 21.5 20.2 24.1   22.3
  1995 29.0 23.3 14.6 19.5 16.4 14.9 27.4 15.9 32.7 25.8 28.6 30.9   27.2 17.2 20.5 28.8   23.2
  1994 33.3 42.9 61.8 45.3 41.2 32.6 29.4 22.4 26.1 26.7 21.2 25.8   33.6 47.2 27.9 25.1   34.0
  1993 26.5 46.2 50.0 30.7 42.4 50.0 26.5 37.5 27.2 41.7 32.5 24.6   33.7 40.4 37.8 33.0   36.0
  1992 47.7 22.2 31.8 28.7 48.6 27.0 27.6 22.0 32.4 37.3 48.7 13.3   28.5 35.5 25.9 39.8   33.1
  1991 24.4 23.4 26.7 21.4 34.0 17.6 21.4 40.0 41.3 54.2 47.5 52.0   29.2 27.3 25.0 47.5   31.4
  1990 57.4 48.6 38.7 31.6 34.6 47.2 30.6 32.4 38.6 34.5 35.6 43.4   51.0 34.9 36.7 36.3   41.2
  1989 66.3 65.1 61.6 63.1 55.6 54.3 56.9 52.1 55.6 62.6 55.3 61.9   64.6 60.4 54.4 58.1   59.4
  1988 54.3 65.7 66.3 64.5 50.9 56.9 48.2 54.9 61.9 64.2 61.6 59.9   60.3 59.5 53.3 62.5   59.0
  1987 54.5 40.0 55.5 59.4 49.0 57.3 53.3 49.2 54.5 50.6 54.6 53.9   53.0 54.1 53.1 53.2   53.4
  1986 73.1 73.7 52.8 55.6 76.6 58.8 60.9 72.2 77.4 80.4 72.4 57.1   67.7 61.8 64.5 77.5   67.7
  1985 23.3 26.7 32.7 46.5 45.6 36.7 50.0 70.6 45.5 68.4 70.0 50.0   33.0 42.6 44.7 62.5   42.9
  1984 0.0 0.0 0.0 0.0 0.0 0.0 27.6 9.1 48.1 41.2 41.9 14.7   10.2 0.0 14.9 43.5   23.7
  1983 0.0 0.0 0.0 7.7 33.3 15.4 0.0 9.1 0.0 - 0.0 0.0   0.0 14.8 10.0 0.0   7.0
  1982 - 0.0 - 0.0 0.0 7.1 - 0.0 - 7.7 - 0.0   0.0 0.0 4.0 7.7   2.8

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 1 0 0 0 0 0 0 0 0 0 0
  Carrying Food 0 1 1 1 1 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 1 18 20 8 6 1 0 0 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 1 0 0
  Nest building 5 7 0 2 1 0 0 1 0 0 0 1
  Nest with eggs 0 0 0 0 0 0 0 0 0 0 0 0
  Nest with young 0 1 0 4 1 0 0 0 0 0 0 0
  On/leaving nest 1 2 9 4 0 0 1 0 0 0 0 0
All years
  Breeding (BLA code) 3 3 4 7 1 1 2 0 0 0 0 1
  Carrying Food 0 3 1 18 7 1 0 1 0 0 0 1
  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 12 101 60 35 24 3 0 0 0 0
  Faecal sac 0 0 0 0 0 0 0 0 0 0 0 0
  Inspecting hollow 0 0 0 0 1 0 0 0 0 1 0 0
  Nest building 34 24 25 26 4 1 1 2 0 1 0 14
  Nest with eggs 0 5 4 0 0 0 0 0 0 0 0 0
  Nest with young 1 4 24 27 12 1 0 0 0 0 0 0
  On/leaving nest 8 23 52 43 9 2 2 0 0 0 0 0

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 0.6 0.9 0.0 0.0 6.6 0.0 0.1 3.7 0.2 1.9 3.9
Previous years
  All previous years 0.6 0.8 0.0 0.0 5.2 0.0 0.0 3.3 0.3 1.8 3.5
  Previous 30 years 0.7 0.9 0.0 0.0 6.1 0.0 0.0 3.8 0.3 2.1 4.0
  Previous 20 years 1.1 1.1 0.0 0.0 7.1 0.0 0.0 3.5 0.0 1.9 5.4
10 year groups
  [2007,2017) 1.7 1.7 0.0 0.0 12.0 0.0 0.1 5.6 0.0 2.7 8.6
  [1997,2007) 0.4 0.4 0.0 0.0 2.2 0.0 0.0 1.4 0.0 1.2 2.2
  [1987,1997) 0.0 0.7 0.0 0.0 4.0 0.0 0.0 4.5 0.9 2.4 1.3
5 year groups
  [2012,2017) 2.8 2.2 0.0 0.0 15.4 0.0 0.2 6.4 0.0 3.0 7.8
  [2007,2012) 0.6 1.2 0.0 0.0 8.6 0.0 0.0 4.8 0.0 2.4 9.4
  [2002,2007) 0.0 0.8 0.0 0.0 3.0 0.0 0.0 2.0 0.0 2.0 3.6
  [1997,2002) 0.8 0.0 0.0 0.0 1.4 0.0 0.0 0.8 0.0 0.4 0.8
  [1992,1997) 0.0 0.2 0.0 0.0 0.8 0.0 0.0 1.6 0.0 0.4 2.2
  [1987,1992) 0.0 1.2 0.0 0.0 7.2 0.0 0.0 7.4 1.8 4.4 0.4
Year
  2017 1.0 4.0 0.0 0.0 54.0 0.0 1.0 17.0 0.0 6.0 17.0
  2016 0.0 3.0 0.0 0.0 15.0 0.0 1.0 6.0 0.0 8.0 14.0
  2015 0.0 1.0 0.0 0.0 23.0 0.0 0.0 13.0 0.0 2.0 7.0
  2014 2.0 2.0 0.0 0.0 17.0 0.0 0.0 3.0 0.0 4.0 5.0
  2013 1.0 4.0 0.0 0.0 15.0 0.0 0.0 5.0 0.0 0.0 7.0
  2012 11.0 1.0 0.0 0.0 7.0 0.0 0.0 5.0 0.0 1.0 6.0
  2011 1.0 2.0 0.0 0.0 6.0 0.0 0.0 3.0 0.0 1.0 9.0
  2010 0.0 1.0 0.0 0.0 10.0 0.0 0.0 7.0 0.0 2.0 9.0
  2009 0.0 0.0 0.0 0.0 12.0 0.0 0.0 4.0 0.0 1.0 8.0
  2008 0.0 2.0 0.0 0.0 9.0 0.0 0.0 8.0 0.0 6.0 17.0
  2007 2.0 1.0 0.0 0.0 6.0 0.0 0.0 2.0 0.0 2.0 4.0
  2006 0.0 2.0 0.0 0.0 7.0 0.0 0.0 4.0 0.0 4.0 9.0
  2005 0.0 2.0 0.0 0.0 4.0 0.0 0.0 4.0 0.0 3.0 5.0
  2004 0.0 0.0 0.0 0.0 2.0 0.0 0.0 0.0 0.0 1.0 3.0
  2003 0.0 0.0 0.0 0.0 1.0 0.0 0.0 0.0 0.0 2.0 1.0
  2002 0.0 0.0 0.0 0.0 1.0 0.0 0.0 2.0 0.0 0.0 0.0
  2001 1.0 0.0 0.0 0.0 3.0 0.0 0.0 2.0 0.0 0.0 2.0
  2000 2.0 0.0 0.0 0.0 1.0 0.0 0.0 0.0 0.0 0.0 0.0
  1999 1.0 0.0 0.0 0.0 3.0 0.0 0.0 0.0 0.0 0.0 0.0
  1998 0.0 0.0 0.0 0.0 0.0 0.0 0.0 2.0 0.0 0.0 0.0
  1997 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 2.0 2.0
  1996 0.0 0.0 0.0 0.0 1.0 0.0 0.0 1.0 0.0 1.0 2.0
  1995 0.0 0.0 0.0 0.0 1.0 0.0 0.0 2.0 0.0 0.0 3.0
  1994 0.0 0.0 0.0 0.0 0.0 0.0 0.0 1.0 0.0 1.0 3.0
  1993 0.0 0.0 0.0 0.0 1.0 0.0 0.0 1.0 0.0 0.0 2.0
  1992 0.0 1.0 0.0 0.0 1.0 0.0 0.0 3.0 0.0 0.0 1.0
  1991 0.0 0.0 0.0 0.0 2.0 0.0 0.0 1.0 0.0 0.0 2.0
  1990 0.0 1.0 0.0 0.0 6.0 0.0 0.0 5.0 1.0 3.0 0.0
  1989 0.0 3.0 0.0 0.0 10.0 0.0 0.0 14.0 1.0 5.0 0.0
  1988 0.0 0.0 0.0 0.0 9.0 0.0 0.0 9.0 4.0 8.0 0.0
  1987 0.0 2.0 0.0 0.0 9.0 0.0 0.0 8.0 3.0 6.0 0.0
  1986 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 1.0
  1985 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0
  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 Australian Raven for 2017.

The red circles are the grid cells where Australian Raven 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 Australian Raven was 100.0% (eg grid number A9) and the minimum was 5.3% (eg grid number U3).

Distribution - all years

This map shows the observed distribution of the Australian Raven for all years.

The red circles are the grid cells where Australian Raven 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 B2.

The size of the circle represents the reporting rate. The maximum reporting rate for Australian Raven was 100.0% (eg grid number B2) and the minimum was 3.6% (eg grid number Q29).

Breeding map

Breeding - 2017

This map shows the breeding distribution of the Australian Raven for 2017.

The red circles are the grid cells where breeding activity for Australian Raven have been reported.

The size of the circle represents the number of reports.

Breeding - all years

This map shows the breeding distribution of the Australian Raven for all years.

The red circles are the grid cells where breeding activity for Australian Raven have been reported.

The size of the circle represents the number of reports.