Anas platyrhynchos
The following is extracted from the Annual Bird Report for the twelve months to June 2017.
Rare, breeding resident
The status of this exotic feral species as a wild bird in this region is in doubt. This species has only been recorded a very few times in Australia and not in this region. However, COG has been reporting the occurrence of introduced feral domestic Mallards. This past practice will be continued this year, with a view to reviewing the situation soon. The status of Black Duck – Mallard hybrids will also be reviewed.
General: All records most likely to be of feral domestic Mallards. A slight increase in both abundance and reporting rate from last year with the average number of birds reported increasing from 1.9 to 3.2. 35 of these 42 observations from WBPD with a maximum 10/17 Jun WBPD GrI11 (LeM1). 1 breeding record: di/5 Oct WBPD (MoM3).
GBS: A single record 1/2wk Aug Lyneham GrL12 (LeM1), down from the 9 records last year.
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.
This chart shows the abundance of Northern Mallard between 1982 and 2017.
This chart shows the monthly abundance of Northern Mallard. 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.
This chart shows the seasonal abundance of Northern Mallard. 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.
Month | Season | ||||||||||||||||||
---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
Period | Jul | Aug | Sep | Oct | Nov | Dec | Jan | Feb | Mar | Apr | May | Jun | Winter | Spring | Summer | Autumn | All | ||
All years | |||||||||||||||||||
All | 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 | 0.0 | ||
Previous years | |||||||||||||||||||
All previous years | 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 | 0.0 | ||
Previous 30 years | 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 | 0.0 | ||
Previous 20 years | 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 | 0.0 | ||
10 year groups | |||||||||||||||||||
[2007,2017) | 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 | 0.0 | ||
[1997,2007) | 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 | 0.0 | ||
[1987,1997) | 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 | 0.0 | ||
5 year groups | |||||||||||||||||||
[2012,2017) | 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 | 0.0 | ||
[2007,2012) | 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 | 0.0 | ||
[2002,2007) | 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 | 0.0 | ||
[1997,2002) | 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 | 0.0 | ||
[1992,1997) | 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 | 0.0 | ||
[1987,1992) | 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 | 0.0 | ||
Year | |||||||||||||||||||
2017 | 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 | 0.0 | ||
2016 | 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 | 0.0 | ||
2015 | 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 | 0.0 | ||
2014 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.1 | 0.0 | 0.0 | 0.0 | 0.1 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | ||
2013 | 0.0 | 0.0 | 0.0 | 0.0 | 0.1 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | ||
2012 | 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 | 0.0 | ||
2011 | 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 | 0.0 | ||
2010 | 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 | 0.0 | ||
2009 | 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 | 0.0 | ||
2008 | 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 | 0.0 | ||
2007 | 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 | 0.0 | ||
2006 | 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 | 0.0 | ||
2005 | 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 | 0.0 | ||
2004 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.1 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | ||
2003 | 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 | 0.0 | ||
2002 | 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 | 0.0 | ||
2001 | 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 | 0.0 | ||
2000 | 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 | 0.0 | ||
1999 | 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 | 0.0 | ||
1998 | 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 | 0.0 | ||
1997 | 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 | 0.0 | ||
1996 | 0.2 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.1 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | ||
1995 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.1 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | ||
1994 | 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 | 0.0 | ||
1993 | 0.0 | 0.0 | 0.0 | 0.1 | 0.1 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | ||
1992 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.1 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | ||
1991 | 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 | 0.0 | ||
1990 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.1 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | ||
1989 | 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 | 0.0 | ||
1988 | 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 | 0.0 | ||
1987 | 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 | 0.0 | ||
1986 | 0.0 | 0.1 | 0.0 | 0.0 | 0.0 | 0.2 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.1 | 0.0 | 0.0 | ||
1985 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.1 | 0.0 | 0.1 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | ||
1984 | 0.2 | 0.0 | 0.0 | 0.2 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.1 | 0.0 | 0.0 | 0.0 | ||
1983 | 0.0 | 0.3 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | - | 0.0 | 0.1 | 0.2 | 0.0 | 0.0 | 0.0 | 0.0 | ||
1982 | - | 1.4 | - | 0.0 | 1.5 | 0.8 | - | 0.5 | - | 0.2 | - | 0.1 | 0.7 | 1.3 | 0.7 | 0.2 | 0.7 |
Reporting rate is the proportion of all surveys in which the species was present.
This chart shows the reporting rate of Northern Mallard each year between 1982 and 2017.
This chart shows the reporting rate by month of Northern Mallard. 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.
This chart shows the seasonal reporting rate of Northern Mallard. 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.
Month | Season | ||||||||||||||||||
---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
Period | Jul | Aug | Sep | Oct | Nov | Dec | Jan | Feb | Mar | Apr | May | Jun | Winter | Spring | Summer | Autumn | All | ||
All years | |||||||||||||||||||
All | 0.3 | 0.5 | 0.4 | 0.7 | 0.7 | 0.4 | 0.6 | 0.6 | 0.4 | 0.3 | 0.4 | 0.4 | 0.4 | 0.6 | 0.6 | 0.4 | 0.5 | ||
Previous years | |||||||||||||||||||
All previous years | 0.4 | 0.5 | 0.4 | 0.8 | 0.8 | 0.4 | 0.7 | 0.7 | 0.4 | 0.4 | 0.4 | 0.4 | 0.4 | 0.7 | 0.6 | 0.4 | 0.5 | ||
Previous 30 years | 0.3 | 0.4 | 0.4 | 0.8 | 0.8 | 0.4 | 0.7 | 0.6 | 0.4 | 0.3 | 0.4 | 0.4 | 0.4 | 0.7 | 0.6 | 0.4 | 0.5 | ||
Previous 20 years | 0.2 | 0.2 | 0.3 | 0.6 | 0.6 | 0.2 | 0.5 | 0.5 | 0.3 | 0.2 | 0.4 | 0.2 | 0.2 | 0.5 | 0.4 | 0.3 | 0.4 | ||
10 year groups | |||||||||||||||||||
[2007,2017) | 0.2 | 0.2 | 0.2 | 0.6 | 0.5 | 0.2 | 0.6 | 0.5 | 0.4 | 0.3 | 0.5 | 0.3 | 0.2 | 0.4 | 0.4 | 0.4 | 0.4 | ||
[1997,2007) | 0.2 | 0.4 | 0.4 | 0.6 | 0.8 | 0.3 | 0.3 | 0.6 | 0.1 | 0.1 | 0.2 | 0.2 | 0.3 | 0.6 | 0.4 | 0.1 | 0.3 | ||
[1987,1997) | 0.9 | 0.7 | 1.3 | 1.9 | 1.3 | 1.3 | 1.7 | 1.3 | 0.6 | 0.8 | 0.4 | 1.1 | 0.9 | 1.5 | 1.5 | 0.6 | 1.1 | ||
5 year groups | |||||||||||||||||||
[2012,2017) | 0.2 | 0.2 | 0.2 | 0.7 | 0.6 | 0.2 | 0.6 | 0.6 | 0.5 | 0.4 | 0.7 | 0.4 | 0.3 | 0.5 | 0.5 | 0.5 | 0.5 | ||
[2007,2012) | 0.2 | 0.0 | 0.1 | 0.3 | 0.3 | 0.1 | 0.3 | 0.0 | 0.2 | 0.2 | 0.0 | 0.1 | 0.1 | 0.2 | 0.1 | 0.2 | 0.2 | ||
[2002,2007) | 0.4 | 0.5 | 0.4 | 0.6 | 0.9 | 0.2 | 0.6 | 0.6 | 0.1 | 0.0 | 0.2 | 0.2 | 0.3 | 0.6 | 0.5 | 0.1 | 0.4 | ||
[1997,2002) | 0.0 | 0.4 | 0.3 | 0.6 | 0.6 | 0.3 | 0.0 | 0.6 | 0.2 | 0.1 | 0.2 | 0.1 | 0.2 | 0.5 | 0.3 | 0.2 | 0.3 | ||
[1992,1997) | 0.3 | 0.2 | 0.3 | 0.4 | 0.6 | 0.3 | 1.5 | 0.7 | 0.2 | 0.0 | 0.3 | 0.3 | 0.3 | 0.4 | 0.9 | 0.2 | 0.4 | ||
[1987,1992) | 1.1 | 1.0 | 1.8 | 2.7 | 1.7 | 1.8 | 1.8 | 1.5 | 0.8 | 1.3 | 0.4 | 1.6 | 1.2 | 2.0 | 1.7 | 0.9 | 1.5 | ||
Year | |||||||||||||||||||
2017 | 0.0 | 0.1 | 0.2 | 0.3 | 0.2 | 0.4 | 0.4 | 0.6 | 0.5 | 0.1 | 0.5 | 0.2 | 0.1 | 0.2 | 0.4 | 0.4 | 0.3 | ||
2016 | 0.0 | 0.0 | 0.3 | 0.5 | 0.3 | 0.0 | 0.1 | 0.0 | 0.1 | 0.3 | 0.5 | 0.0 | 0.0 | 0.4 | 0.0 | 0.2 | 0.2 | ||
2015 | 0.2 | 0.2 | 0.0 | 0.8 | 0.5 | 0.1 | 0.6 | 0.1 | 0.1 | 0.0 | 0.2 | 0.3 | 0.2 | 0.5 | 0.3 | 0.1 | 0.3 | ||
2014 | 0.0 | 0.4 | 0.5 | 0.9 | 0.0 | 0.4 | 1.1 | 2.7 | 1.6 | 1.0 | 0.7 | 1.6 | 0.9 | 0.6 | 1.4 | 1.2 | 1.1 | ||
2013 | 0.0 | 0.5 | 0.5 | 1.3 | 2.6 | 0.2 | 1.5 | 0.9 | 1.0 | 0.7 | 1.7 | 0.0 | 0.1 | 1.4 | 0.8 | 1.0 | 0.9 | ||
2012 | 0.8 | 0.4 | 0.0 | 0.4 | 0.0 | 1.1 | 0.5 | 0.5 | 0.6 | 0.3 | 1.6 | 0.3 | 0.5 | 0.2 | 0.7 | 0.7 | 0.5 | ||
2011 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.3 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.1 | 0.0 | 0.0 | ||
2010 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.5 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.2 | 0.0 | 0.0 | ||
2009 | 0.7 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.9 | 0.0 | 0.0 | 0.0 | 0.2 | 0.0 | 0.0 | 0.3 | 0.1 | ||
2008 | 0.0 | 0.0 | 0.4 | 0.5 | 0.7 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.5 | 0.0 | 0.0 | 0.2 | ||
2007 | 0.0 | 0.0 | 0.0 | 0.9 | 1.4 | 0.3 | 0.4 | 0.0 | 0.4 | 1.3 | 0.0 | 0.3 | 0.2 | 0.7 | 0.3 | 0.7 | 0.5 | ||
2006 | 0.0 | 0.0 | 0.4 | 0.0 | 0.6 | 0.6 | 1.1 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.3 | 0.6 | 0.0 | 0.2 | ||
2005 | 0.0 | 0.9 | 0.4 | 1.1 | 1.4 | 0.4 | 0.0 | 0.0 | 0.0 | 0.0 | 0.5 | 0.0 | 0.2 | 0.8 | 0.2 | 0.2 | 0.4 | ||
2004 | 0.8 | 0.0 | 1.0 | 0.0 | 0.6 | 0.0 | 0.6 | 1.0 | 0.0 | 0.0 | 0.0 | 0.6 | 0.5 | 0.5 | 0.4 | 0.0 | 0.4 | ||
2003 | 0.0 | 0.7 | 0.0 | 1.6 | 0.9 | 0.4 | 0.7 | 1.1 | 0.4 | 0.0 | 0.0 | 0.0 | 0.2 | 0.8 | 0.7 | 0.2 | 0.5 | ||
2002 | 0.6 | 0.8 | 0.5 | 0.9 | 1.0 | 0.0 | 0.6 | 0.7 | 0.0 | 0.0 | 0.0 | 0.5 | 0.6 | 0.8 | 0.3 | 0.0 | 0.4 | ||
2001 | 0.0 | 0.6 | 0.3 | 0.4 | 1.1 | 0.4 | 0.0 | 1.0 | 0.0 | 0.5 | 0.6 | 0.0 | 0.2 | 0.5 | 0.4 | 0.3 | 0.4 | ||
2000 | 0.0 | 0.0 | 0.9 | 0.9 | 1.4 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 1.1 | 0.0 | 0.0 | 0.3 | ||
1999 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.6 | 0.0 | 0.7 | 0.5 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.5 | 0.2 | 0.2 | ||
1998 | 0.0 | 0.0 | 0.0 | 2.2 | 0.0 | 0.9 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.6 | 0.4 | 0.0 | 0.3 | ||
1997 | 0.0 | 1.7 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 1.8 | 2.5 | 0.0 | 0.0 | 1.4 | 0.9 | 0.0 | 0.5 | 0.5 | 0.4 | ||
1996 | 1.5 | 1.1 | 0.0 | 0.0 | 0.0 | 1.0 | 1.0 | 0.0 | 0.0 | 0.0 | 1.7 | 0.0 | 0.8 | 0.0 | 0.7 | 0.4 | 0.5 | ||
1995 | 0.0 | 0.0 | 0.0 | 0.0 | 0.9 | 0.0 | 0.9 | 1.6 | 1.0 | 0.0 | 0.0 | 1.1 | 0.3 | 0.3 | 0.8 | 0.3 | 0.4 | ||
1994 | 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 | 0.0 | ||
1993 | 0.0 | 0.0 | 0.0 | 2.7 | 3.0 | 0.0 | 0.0 | 3.1 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 2.0 | 0.8 | 0.0 | 0.7 | ||
1992 | 0.0 | 0.0 | 1.2 | 0.0 | 0.0 | 0.0 | 6.9 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.4 | 2.5 | 0.0 | 0.6 | ||
1991 | 0.0 | 0.0 | 1.2 | 0.0 | 0.0 | 0.0 | 1.8 | 0.0 | 1.6 | 1.7 | 0.0 | 0.0 | 0.0 | 0.3 | 0.6 | 1.1 | 0.4 | ||
1990 | 1.9 | 0.5 | 0.0 | 0.0 | 1.9 | 1.4 | 1.4 | 0.0 | 0.0 | 0.0 | 0.0 | 2.6 | 1.4 | 0.7 | 0.9 | 0.0 | 0.9 | ||
1989 | 1.5 | 1.7 | 2.6 | 1.2 | 0.5 | 0.4 | 0.5 | 2.1 | 0.6 | 2.1 | 1.3 | 1.8 | 1.7 | 1.5 | 1.0 | 1.3 | 1.4 | ||
1988 | 0.9 | 1.1 | 2.8 | 4.7 | 2.8 | 2.6 | 1.5 | 0.6 | 1.0 | 1.1 | 0.0 | 0.5 | 0.8 | 3.5 | 1.6 | 0.7 | 1.7 | ||
1987 | 0.0 | 0.0 | 1.2 | 4.3 | 1.8 | 3.3 | 3.6 | 2.5 | 1.0 | 1.2 | 0.4 | 2.5 | 2.2 | 2.4 | 3.1 | 0.9 | 2.1 | ||
1986 | 0.0 | 5.3 | 0.0 | 0.0 | 4.3 | 2.9 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 2.0 | 1.5 | 1.1 | 0.0 | 1.1 | ||
1985 | 0.0 | 3.3 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 5.3 | 0.0 | 7.1 | 3.4 | 0.0 | 0.0 | 2.5 | 1.0 | ||
1984 | 20.0 | 0.0 | 0.0 | 8.3 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 2.0 | 4.8 | 0.0 | 0.0 | 0.8 | ||
1983 | 0.0 | 8.3 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | - | 0.0 | 9.1 | 6.9 | 0.0 | 0.0 | 0.0 | 2.0 | ||
1982 | - | 36.4 | - | 0.0 | 37.5 | 21.4 | - | 18.2 | - | 7.7 | - | 7.1 | 20.0 | 33.3 | 20.0 | 7.7 | 19.4 |
Breeding code | Jul | Aug | Sep | Oct | Nov | Dec | Jan | Feb | Mar | Apr | May | Jun |
---|---|---|---|---|---|---|---|---|---|---|---|---|
2017 | ||||||||||||
Breeding (BLA code) | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 |
Carrying Food | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 |
Copulating | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 |
Display | 0 | 0 | 0 | 1 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 |
Dependent young | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 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 | 0 | 0 | 0 |
Nest building | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 |
Nest with eggs | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 |
Nest with young | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 |
On/leaving nest | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 |
All years | ||||||||||||
Breeding (BLA code) | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 |
Carrying Food | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 |
Copulating | 0 | 0 | 0 | 1 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 |
Display | 0 | 0 | 0 | 1 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 |
Dependent young | 0 | 0 | 0 | 4 | 2 | 0 | 1 | 2 | 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 | 0 | 0 | 0 |
Nest building | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 |
Nest with eggs | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 |
Nest with young | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 |
On/leaving nest | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 |
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 | 0.0 | 0.0 | 0.0 | 0.0 | 0.2 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 |
Previous years | |||||||||||
All previous years | 0.0 | 0.0 | 0.0 | 0.0 | 0.3 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 |
Previous 30 years | 0.0 | 0.0 | 0.0 | 0.0 | 0.3 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 |
Previous 20 years | 0.0 | 0.0 | 0.0 | 0.0 | 0.1 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 |
10 year groups | |||||||||||
[2007,2017) | 0.0 | 0.0 | 0.1 | 0.0 | 0.1 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 |
[1997,2007) | 0.0 | 0.0 | 0.0 | 0.0 | 0.2 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 |
[1987,1997) | 0.0 | 0.0 | 0.0 | 0.0 | 0.6 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 |
5 year groups | |||||||||||
[2012,2017) | 0.0 | 0.0 | 0.2 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 |
[2007,2012) | 0.0 | 0.0 | 0.0 | 0.0 | 0.2 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 |
[2002,2007) | 0.0 | 0.0 | 0.0 | 0.0 | 0.4 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 |
[1997,2002) | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 |
[1992,1997) | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 |
[1987,1992) | 0.0 | 0.0 | 0.0 | 0.0 | 1.2 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 |
Year | |||||||||||
2017 | 0.0 | 0.0 | 0.0 | 1.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 |
2016 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 |
2015 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 |
2014 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 |
2013 | 0.0 | 0.0 | 1.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 |
2012 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 |
2011 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 |
2010 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 |
2009 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 |
2008 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 |
2007 | 0.0 | 0.0 | 0.0 | 0.0 | 1.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 |
2006 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 |
2005 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 |
2004 | 0.0 | 0.0 | 0.0 | 0.0 | 1.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 |
2003 | 0.0 | 0.0 | 0.0 | 0.0 | 1.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 |
2002 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 |
2001 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 |
2000 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 |
1999 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 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 | 0.0 | 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 | 0.0 | 0.0 |
1996 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 |
1995 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 |
1994 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 |
1993 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 |
1992 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 |
1991 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 |
1990 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 |
1989 | 0.0 | 0.0 | 0.0 | 0.0 | 1.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 |
1988 | 0.0 | 0.0 | 0.0 | 0.0 | 3.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 |
1987 | 0.0 | 0.0 | 0.0 | 0.0 | 2.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 |
1986 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 |
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 |
This map shows the observed distribution of the Northern Mallard for 2017.
The red circles are the grid cells where Northern Mallard 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 A11.
The size of the circle represents the reporting rate. The maximum reporting rate for Northern Mallard was 15.7% (eg grid number I11) and the minimum was 0.1% (eg grid number L14).
This map shows the observed distribution of the Northern Mallard for all years.
The red circles are the grid cells where Northern Mallard 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 A12.
The size of the circle represents the reporting rate. The maximum reporting rate for Northern Mallard was 33.3% (eg grid number W4) and the minimum was 0.0% (eg grid number M13).
This map shows the breeding distribution of the Northern Mallard for 2017.
The red circles are the grid cells where breeding activity for Northern Mallard have been reported.
The size of the circle represents the number of reports.
This map shows the breeding distribution of the Northern Mallard for all years.
The red circles are the grid cells where breeding activity for Northern Mallard have been reported.
The size of the circle represents the number of reports.