Chestnut Teal
Anas castanea
ABR description
The following is extracted from the Annual Bird Report for the twelve months to June 2017.
Uncommon, breeding resident
Less frequently observed than Grey Teal.
General: An increase in all indices, from the number of records, distribution, abundance (0.13 cf 0.06 last year) to reporting rate (3.2% cf 1.6% last year). The average number of birds seen was similar at 4.4 with an increase in the maximum number 310/16 Aug LGeo GrT09 (LeM1). Reported throughout the year with most records during the summer months. Reported throughout the area from all major wetlands. The breeding observations, all dy, were reported from BSP 10 Dec GrS13 (McD1), 6 Dec Foxlow Lagoon GrS18 (BuM1), 3 records from JWNR on 24 Dec (presumably the same brood) and 15 Jan LGeo E GrT09 (LeM1).
GBS. 4 records of a single bird from one site at Jerrabomberra GrM16 (HaL2) between 3wk Aug and 2wk Sep.
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 Chestnut Teal between 1982 and 2017. 
Abundance by month
This chart shows the monthly abundance of Chestnut Teal. 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 Chestnut Teal. 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 | 0.6 | 0.6 | 0.4 | 0.5 | 0.5 | 0.6 | 0.4 | 0.5 | 0.6 | 0.6 | 0.8 | 0.7 | 0.6 | 0.4 | 0.5 | 0.7 | 0.6 | ||
| Previous years | |||||||||||||||||||
| All previous years | 0.6 | 0.6 | 0.4 | 0.5 | 0.5 | 0.7 | 0.5 | 0.6 | 0.7 | 0.7 | 1.0 | 0.8 | 0.7 | 0.5 | 0.6 | 0.8 | 0.6 | ||
| Previous 30 years | 0.6 | 0.6 | 0.4 | 0.5 | 0.5 | 0.7 | 0.5 | 0.6 | 0.7 | 0.7 | 0.8 | 0.8 | 0.7 | 0.5 | 0.6 | 0.7 | 0.6 | ||
| Previous 20 years | 0.3 | 0.3 | 0.3 | 0.2 | 0.2 | 0.3 | 0.1 | 0.1 | 0.1 | 0.3 | 0.3 | 0.5 | 0.4 | 0.2 | 0.2 | 0.2 | 0.3 | ||
| 10 year groups | |||||||||||||||||||
| [2007,2017) | 0.3 | 0.2 | 0.1 | 0.1 | 0.1 | 0.1 | 0.1 | 0.1 | 0.1 | 0.4 | 0.4 | 0.7 | 0.4 | 0.1 | 0.1 | 0.3 | 0.2 | ||
| [1997,2007) | 0.3 | 0.6 | 0.7 | 0.4 | 0.4 | 0.6 | 0.2 | 0.2 | 0.2 | 0.1 | 0.1 | 0.3 | 0.4 | 0.5 | 0.4 | 0.1 | 0.4 | ||
| [1987,1997) | 1.6 | 1.6 | 1.0 | 2.3 | 1.6 | 2.8 | 2.4 | 2.6 | 3.9 | 2.9 | 2.8 | 2.1 | 1.8 | 1.7 | 2.6 | 3.2 | 2.3 | ||
| 5 year groups | |||||||||||||||||||
| [2012,2017) | 0.3 | 0.2 | 0.1 | 0.1 | 0.1 | 0.1 | 0.1 | 0.1 | 0.1 | 0.2 | 0.2 | 0.2 | 0.2 | 0.1 | 0.1 | 0.1 | 0.1 | ||
| [2007,2012) | 0.3 | 0.2 | 0.1 | 0.1 | 0.1 | 0.2 | 0.2 | 0.2 | 0.0 | 0.9 | 1.2 | 1.6 | 1.0 | 0.1 | 0.2 | 0.7 | 0.4 | ||
| [2002,2007) | 0.1 | 0.4 | 0.1 | 0.1 | 0.0 | 0.1 | 0.1 | 0.0 | 0.0 | 0.0 | 0.1 | 0.1 | 0.2 | 0.1 | 0.1 | 0.1 | 0.1 | ||
| [1997,2002) | 0.8 | 0.9 | 1.4 | 0.9 | 0.9 | 1.2 | 0.4 | 0.3 | 0.5 | 0.1 | 0.0 | 0.6 | 0.7 | 1.1 | 0.7 | 0.3 | 0.7 | ||
| [1992,1997) | 3.8 | 3.4 | 1.6 | 5.2 | 3.0 | 4.8 | 4.7 | 4.7 | 4.5 | 4.5 | 5.0 | 4.5 | 3.9 | 3.4 | 4.7 | 4.7 | 4.1 | ||
| [1987,1992) | 0.6 | 0.6 | 0.8 | 0.8 | 0.9 | 2.0 | 1.1 | 1.8 | 3.5 | 1.9 | 1.6 | 0.8 | 0.7 | 0.8 | 1.7 | 2.4 | 1.3 | ||
| Year | |||||||||||||||||||
| 2017 | 0.1 | 0.3 | 0.1 | 0.0 | 0.1 | 0.2 | 0.2 | 0.2 | 0.1 | 0.1 | 0.1 | 0.1 | 0.2 | 0.1 | 0.2 | 0.1 | 0.1 | ||
| 2016 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.1 | 0.0 | 0.0 | 0.0 | 0.1 | 0.1 | 0.4 | 0.2 | 0.0 | 0.0 | 0.1 | 0.1 | ||
| 2015 | 0.1 | 0.1 | 0.0 | 0.1 | 0.1 | 0.1 | 0.0 | 0.0 | 0.0 | 0.1 | 0.0 | 0.0 | 0.1 | 0.0 | 0.1 | 0.0 | 0.1 | ||
| 2014 | 0.2 | 0.3 | 0.1 | 0.1 | 0.1 | 0.1 | 0.1 | 0.1 | 0.1 | 0.1 | 0.2 | 0.0 | 0.1 | 0.1 | 0.1 | 0.1 | 0.1 | ||
| 2013 | 0.9 | 0.7 | 0.2 | 0.2 | 0.3 | 0.2 | 0.2 | 0.3 | 0.4 | 0.1 | 0.6 | 0.1 | 0.5 | 0.2 | 0.2 | 0.3 | 0.3 | ||
| 2012 | 0.8 | 0.3 | 0.1 | 0.2 | 0.4 | 0.0 | 0.0 | 0.1 | 0.2 | 0.9 | 0.5 | 0.1 | 0.4 | 0.2 | 0.0 | 0.5 | 0.3 | ||
| 2011 | 0.0 | 0.9 | 0.0 | 0.2 | 0.2 | 0.5 | 0.4 | 0.4 | 0.0 | 0.8 | 2.9 | 6.1 | 3.7 | 0.1 | 0.4 | 1.2 | 1.1 | ||
| 2010 | 0.1 | 0.0 | 0.2 | 0.2 | 0.0 | 0.1 | 0.1 | 0.2 | 0.1 | 4.1 | 0.6 | 0.1 | 0.1 | 0.1 | 0.1 | 1.8 | 0.5 | ||
| 2009 | 0.1 | 0.0 | 0.0 | 0.0 | 0.0 | 0.1 | 0.1 | 0.0 | 0.0 | 0.0 | 0.1 | 0.0 | 0.0 | 0.0 | 0.1 | 0.0 | 0.0 | ||
| 2008 | 0.0 | 0.0 | 0.0 | 0.2 | 0.5 | 0.0 | 0.0 | 0.1 | 0.1 | 0.1 | 0.1 | 0.1 | 0.1 | 0.2 | 0.0 | 0.1 | 0.1 | ||
| 2007 | 1.7 | 0.1 | 0.1 | 0.1 | 0.0 | 0.1 | 0.1 | 0.1 | 0.0 | 0.1 | 0.1 | 0.1 | 0.4 | 0.1 | 0.1 | 0.1 | 0.1 | ||
| 2006 | 0.0 | 1.7 | 0.2 | 0.1 | 0.0 | 0.1 | 0.2 | 0.0 | 0.0 | 0.1 | 0.0 | 0.3 | 0.5 | 0.1 | 0.1 | 0.0 | 0.2 | ||
| 2005 | 0.1 | 0.1 | 0.1 | 0.0 | 0.0 | 0.0 | 0.1 | 0.1 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.1 | 0.0 | 0.0 | ||
| 2004 | 0.2 | 0.1 | 0.1 | 0.0 | 0.0 | 0.0 | 0.1 | 0.2 | 0.1 | 0.1 | 0.1 | 0.0 | 0.1 | 0.0 | 0.1 | 0.1 | 0.1 | ||
| 2003 | 0.0 | 0.0 | 0.1 | 0.1 | 0.1 | 0.0 | 0.2 | 0.0 | 0.0 | 0.0 | 0.2 | 0.0 | 0.0 | 0.1 | 0.0 | 0.1 | 0.0 | ||
| 2002 | 0.0 | 0.2 | 0.1 | 0.1 | 0.0 | 0.1 | 0.1 | 0.0 | 0.0 | 0.0 | 0.2 | 0.0 | 0.1 | 0.0 | 0.1 | 0.1 | 0.1 | ||
| 2001 | 0.0 | 0.0 | 0.0 | 0.1 | 0.1 | 0.0 | 0.1 | 0.1 | 0.1 | 0.2 | 0.1 | 0.0 | 0.0 | 0.1 | 0.1 | 0.1 | 0.1 | ||
| 2000 | 0.2 | 0.2 | 0.0 | 0.0 | 0.1 | 0.4 | 0.8 | 0.3 | 0.2 | 0.1 | 0.0 | 0.0 | 0.1 | 0.0 | 0.5 | 0.1 | 0.2 | ||
| 1999 | 0.9 | 0.6 | 0.5 | 0.4 | 0.2 | 1.3 | 0.0 | 0.0 | 2.0 | 0.0 | 0.0 | 1.9 | 1.5 | 0.4 | 0.5 | 0.7 | 0.7 | ||
| 1998 | 0.0 | 1.5 | 0.6 | 2.5 | 2.3 | 1.7 | 0.3 | 0.2 | 0.1 | 0.5 | 0.0 | 0.1 | 0.5 | 1.7 | 0.9 | 0.2 | 1.0 | ||
| 1997 | 3.8 | 5.1 | 10.5 | 5.0 | 3.1 | 6.0 | 0.0 | 1.8 | 0.7 | 0.2 | 0.0 | 0.0 | 2.9 | 6.3 | 3.4 | 0.3 | 3.6 | ||
| 1996 | 1.6 | 8.2 | 0.8 | 2.6 | 3.6 | 3.7 | 4.9 | 5.4 | 5.3 | 6.1 | 3.8 | 9.5 | 6.9 | 2.5 | 4.6 | 5.2 | 4.7 | ||
| 1995 | 8.4 | 2.4 | 1.6 | 3.3 | 3.8 | 5.2 | 1.2 | 0.6 | 5.5 | 2.5 | 7.8 | 2.4 | 4.2 | 3.0 | 2.4 | 4.8 | 3.6 | ||
| 1994 | 2.2 | 4.4 | 2.2 | 10.0 | 2.5 | 7.2 | 12.0 | 3.6 | 3.9 | 5.7 | 7.4 | 3.6 | 3.5 | 4.6 | 7.9 | 5.6 | 5.3 | ||
| 1993 | 2.9 | 0.5 | 0.1 | 4.5 | 0.1 | 6.7 | 7.5 | 9.3 | 4.9 | 7.2 | 5.2 | 4.7 | 2.6 | 1.7 | 7.7 | 5.6 | 4.1 | ||
| 1992 | 1.2 | 0.2 | 2.8 | 7.9 | 4.7 | 2.8 | 0.4 | 7.5 | 2.3 | 1.4 | 0.5 | 1.4 | 1.0 | 5.2 | 3.1 | 1.4 | 2.8 | ||
| 1991 | 1.4 | 1.1 | 1.6 | 1.6 | 3.5 | 6.2 | 4.9 | 13.1 | 12.7 | 3.3 | 1.5 | 0.4 | 1.1 | 2.2 | 7.7 | 5.9 | 3.7 | ||
| 1990 | 1.2 | 0.3 | 1.7 | 4.0 | 1.9 | 11.5 | 4.3 | 3.2 | 5.9 | 3.2 | 2.8 | 4.5 | 1.4 | 2.5 | 6.4 | 4.1 | 3.1 | ||
| 1989 | 0.1 | 0.4 | 0.4 | 0.2 | 1.6 | 0.7 | 0.8 | 2.0 | 4.3 | 5.1 | 5.5 | 0.6 | 0.3 | 0.6 | 1.1 | 5.0 | 1.6 | ||
| 1988 | 0.3 | 0.7 | 1.2 | 0.4 | 0.1 | 0.1 | 0.0 | 0.0 | 0.0 | 0.0 | 0.1 | 0.5 | 0.5 | 0.5 | 0.0 | 0.1 | 0.3 | ||
| 1987 | 0.0 | 0.6 | 0.1 | 0.2 | 0.2 | 0.4 | 0.3 | 0.3 | 2.4 | 0.0 | 0.1 | 0.1 | 0.1 | 0.2 | 0.3 | 0.8 | 0.4 | ||
| 1986 | 0.1 | 0.5 | 0.5 | 0.2 | 0.1 | 0.5 | 3.1 | 0.7 | 1.8 | 1.0 | 3.5 | 1.6 | 0.8 | 0.3 | 1.2 | 1.9 | 1.0 | ||
| 1985 | 1.3 | 0.5 | 0.7 | 0.7 | 0.5 | 0.8 | 12.1 | 5.7 | 0.5 | 0.3 | 1.9 | 1.0 | 0.9 | 0.6 | 2.9 | 0.8 | 1.2 | ||
| 1984 | 34.6 | 0.5 | 64.6 | 3.5 | 8.8 | 7.9 | 0.5 | 4.5 | 0.0 | 0.8 | 17.9 | 2.3 | 5.2 | 19.0 | 3.5 | 6.3 | 6.3 | ||
| 1983 | 1.7 | 0.2 | 4.6 | 14.3 | 0.0 | 0.1 | 1.3 | 0.1 | 0.0 | - | 4.2 | 2.3 | 1.3 | 7.7 | 0.3 | 3.6 | 3.1 | ||
| 1982 | - | 0.7 | - | 0.0 | 0.0 | 1.6 | - | 0.1 | - | 3.5 | - | 5.0 | 3.1 | 0.0 | 1.0 | 3.5 | 2.1 | ||
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 Chestnut Teal each year between 1982 and 2017. 
Reporting rate by month
This chart shows the reporting rate by month of Chestnut Teal. 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 Chestnut Teal. 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 | 3.3 | 3.4 | 2.7 | 2.6 | 3.0 | 3.2 | 3.7 | 3.9 | 2.7 | 2.6 | 3.3 | 2.3 | 2.9 | 2.7 | 3.6 | 2.8 | 3.0 | ||
| Previous years | |||||||||||||||||||
| All previous years | 3.5 | 3.9 | 2.9 | 2.8 | 3.0 | 3.0 | 3.4 | 3.2 | 2.6 | 2.5 | 3.3 | 2.3 | 3.1 | 2.9 | 3.2 | 2.8 | 3.0 | ||
| Previous 30 years | 3.3 | 3.7 | 2.7 | 2.7 | 3.0 | 2.9 | 3.4 | 3.0 | 2.6 | 2.4 | 3.1 | 2.1 | 2.9 | 2.8 | 3.1 | 2.7 | 2.9 | ||
| Previous 20 years | 2.8 | 3.4 | 2.3 | 2.4 | 2.7 | 2.3 | 2.9 | 2.3 | 2.0 | 1.8 | 2.5 | 1.4 | 2.4 | 2.4 | 2.5 | 2.0 | 2.3 | ||
| 10 year groups | |||||||||||||||||||
| [2007,2017) | 3.1 | 3.2 | 2.5 | 2.2 | 3.1 | 2.4 | 2.5 | 2.2 | 1.9 | 1.7 | 2.7 | 1.5 | 2.4 | 2.5 | 2.4 | 2.0 | 2.3 | ||
| [1997,2007) | 2.3 | 3.9 | 2.0 | 3.0 | 1.8 | 2.1 | 4.1 | 2.4 | 2.2 | 2.2 | 1.9 | 1.2 | 2.3 | 2.3 | 2.8 | 2.1 | 2.4 | ||
| [1987,1997) | 5.0 | 4.7 | 4.8 | 4.5 | 3.9 | 6.1 | 6.1 | 6.2 | 5.7 | 5.8 | 5.6 | 5.5 | 5.1 | 4.4 | 6.1 | 5.7 | 5.2 | ||
| 5 year groups | |||||||||||||||||||
| [2012,2017) | 3.5 | 3.5 | 2.3 | 2.4 | 3.4 | 2.6 | 2.3 | 2.1 | 2.3 | 1.8 | 2.5 | 1.5 | 2.7 | 2.6 | 2.3 | 2.2 | 2.4 | ||
| [2007,2012) | 2.0 | 2.0 | 2.8 | 1.8 | 2.5 | 2.1 | 3.4 | 3.1 | 0.8 | 1.3 | 3.5 | 1.4 | 1.7 | 2.2 | 2.8 | 1.6 | 2.1 | ||
| [2002,2007) | 2.3 | 4.0 | 2.4 | 2.8 | 1.1 | 2.0 | 5.5 | 2.0 | 2.1 | 2.2 | 2.9 | 1.2 | 2.3 | 2.2 | 3.0 | 2.3 | 2.4 | ||
| [1997,2002) | 2.4 | 3.8 | 1.7 | 3.2 | 2.7 | 2.2 | 2.4 | 2.9 | 2.3 | 2.1 | 0.8 | 1.2 | 2.3 | 2.5 | 2.5 | 1.9 | 2.3 | ||
| [1992,1997) | 9.2 | 7.2 | 7.4 | 7.1 | 5.9 | 8.8 | 10.2 | 10.0 | 9.5 | 8.2 | 7.1 | 8.0 | 8.0 | 6.8 | 9.7 | 8.3 | 8.1 | ||
| [1987,1992) | 3.1 | 3.4 | 3.6 | 3.1 | 2.9 | 4.9 | 3.8 | 4.8 | 3.4 | 4.4 | 4.8 | 4.1 | 3.5 | 3.2 | 4.5 | 4.2 | 3.8 | ||
| Year | |||||||||||||||||||
| 2017 | 1.9 | 1.2 | 1.7 | 1.8 | 2.3 | 4.5 | 5.0 | 7.1 | 3.0 | 2.9 | 3.1 | 2.5 | 2.0 | 1.9 | 5.6 | 3.0 | 3.2 | ||
| 2016 | 1.2 | 1.1 | 1.1 | 1.7 | 1.6 | 2.9 | 1.4 | 1.3 | 1.5 | 1.5 | 2.3 | 1.9 | 1.4 | 1.5 | 1.8 | 1.7 | 1.6 | ||
| 2015 | 2.8 | 3.4 | 2.1 | 3.0 | 1.7 | 2.1 | 1.1 | 1.3 | 1.8 | 1.9 | 1.1 | 0.5 | 1.9 | 2.3 | 1.5 | 1.6 | 1.8 | ||
| 2014 | 4.8 | 5.5 | 3.9 | 3.5 | 3.0 | 1.4 | 4.0 | 4.1 | 3.6 | 2.3 | 4.0 | 0.8 | 3.1 | 3.5 | 3.5 | 3.3 | 3.4 | ||
| 2013 | 9.1 | 7.7 | 4.3 | 2.5 | 7.4 | 3.1 | 3.8 | 2.9 | 3.6 | 1.6 | 2.5 | 2.2 | 6.0 | 4.4 | 3.3 | 2.6 | 3.9 | ||
| 2012 | 4.7 | 5.9 | 2.0 | 2.1 | 6.3 | 2.7 | 2.4 | 3.4 | 2.7 | 2.5 | 4.8 | 3.3 | 4.5 | 3.1 | 2.7 | 3.0 | 3.2 | ||
| 2011 | 2.4 | 3.2 | 2.3 | 2.0 | 4.8 | 3.9 | 4.1 | 1.8 | 0.6 | 1.6 | 2.9 | 2.6 | 2.7 | 2.6 | 3.5 | 1.6 | 2.6 | ||
| 2010 | 1.0 | 0.9 | 4.5 | 0.8 | 1.4 | 1.8 | 2.4 | 5.9 | 1.2 | 0.9 | 2.0 | 1.5 | 1.3 | 2.0 | 2.6 | 1.2 | 1.8 | ||
| 2009 | 2.2 | 2.1 | 3.0 | 0.9 | 0.4 | 1.1 | 4.0 | 2.5 | 0.5 | 0.8 | 3.1 | 0.9 | 1.5 | 1.4 | 2.4 | 1.2 | 1.5 | ||
| 2008 | 1.4 | 1.7 | 1.5 | 2.1 | 4.7 | 0.5 | 2.4 | 4.6 | 1.6 | 0.9 | 2.7 | 1.4 | 1.5 | 2.3 | 2.0 | 1.5 | 1.9 | ||
| 2007 | 3.3 | 1.9 | 2.9 | 3.2 | 2.0 | 2.3 | 3.5 | 2.6 | 0.4 | 2.1 | 7.3 | 0.3 | 1.2 | 2.9 | 2.8 | 2.5 | 2.5 | ||
| 2006 | 0.0 | 6.8 | 2.2 | 2.3 | 1.2 | 1.1 | 7.3 | 1.5 | 2.3 | 2.7 | 2.9 | 1.5 | 2.1 | 2.0 | 3.5 | 2.6 | 2.5 | ||
| 2005 | 3.7 | 3.7 | 3.3 | 1.1 | 0.7 | 0.0 | 7.8 | 2.2 | 3.0 | 1.6 | 3.5 | 0.8 | 2.2 | 2.0 | 2.7 | 2.8 | 2.4 | ||
| 2004 | 3.6 | 5.3 | 3.4 | 4.1 | 0.0 | 3.7 | 3.0 | 7.1 | 3.1 | 1.6 | 1.9 | 1.8 | 3.5 | 2.5 | 4.2 | 2.3 | 3.1 | ||
| 2003 | 2.6 | 2.2 | 1.7 | 4.7 | 2.3 | 0.0 | 2.2 | 0.5 | 0.9 | 2.8 | 3.9 | 1.2 | 1.9 | 2.8 | 0.7 | 2.3 | 2.0 | ||
| 2002 | 1.1 | 2.5 | 1.0 | 2.6 | 1.0 | 4.1 | 6.9 | 0.7 | 0.9 | 2.4 | 1.2 | 0.5 | 1.3 | 1.6 | 4.0 | 1.5 | 2.2 | ||
| 2001 | 0.0 | 1.8 | 0.3 | 0.8 | 2.3 | 1.1 | 3.0 | 2.6 | 2.1 | 2.0 | 1.2 | 0.5 | 0.7 | 0.9 | 2.1 | 1.8 | 1.4 | ||
| 2000 | 1.6 | 1.3 | 0.5 | 1.3 | 1.4 | 0.7 | 2.1 | 2.9 | 2.4 | 2.2 | 0.9 | 0.5 | 1.1 | 1.1 | 1.7 | 2.1 | 1.5 | ||
| 1999 | 11.8 | 5.2 | 1.7 | 3.8 | 2.6 | 3.1 | 2.2 | 0.7 | 2.7 | 2.1 | 0.6 | 1.9 | 3.8 | 2.7 | 2.1 | 1.8 | 2.5 | ||
| 1998 | 0.0 | 7.5 | 3.3 | 7.6 | 2.7 | 2.8 | 2.9 | 1.9 | 1.1 | 2.6 | 0.0 | 2.7 | 3.6 | 4.3 | 2.6 | 1.3 | 3.2 | ||
| 1997 | 6.9 | 10.3 | 6.4 | 9.2 | 6.0 | 7.7 | 2.0 | 10.5 | 5.0 | 1.8 | 0.0 | 1.4 | 6.0 | 6.9 | 7.1 | 2.1 | 5.7 | ||
| 1996 | 7.5 | 10.6 | 12.0 | 6.1 | 7.4 | 5.1 | 7.8 | 9.4 | 9.8 | 9.4 | 12.1 | 10.3 | 9.7 | 8.1 | 7.3 | 10.3 | 8.7 | ||
| 1995 | 14.0 | 7.0 | 6.8 | 6.7 | 6.4 | 13.8 | 11.5 | 7.9 | 11.2 | 5.6 | 6.5 | 5.3 | 8.5 | 6.6 | 11.4 | 7.7 | 8.4 | ||
| 1994 | 5.9 | 6.5 | 4.4 | 5.8 | 3.7 | 8.7 | 14.7 | 10.3 | 13.6 | 11.5 | 8.8 | 5.6 | 6.0 | 4.5 | 11.6 | 11.4 | 8.2 | ||
| 1993 | 10.2 | 6.4 | 3.2 | 12.0 | 6.1 | 8.7 | 12.2 | 18.8 | 3.7 | 8.3 | 5.2 | 11.6 | 9.2 | 7.4 | 12.6 | 5.5 | 8.2 | ||
| 1992 | 6.2 | 3.7 | 9.4 | 6.4 | 6.9 | 7.9 | 5.2 | 7.3 | 8.5 | 5.1 | 3.9 | 8.3 | 6.1 | 7.6 | 6.8 | 5.8 | 6.6 | ||
| 1991 | 5.5 | 4.3 | 3.5 | 6.8 | 8.2 | 4.1 | 14.3 | 12.0 | 6.3 | 10.2 | 13.1 | 10.0 | 5.9 | 6.3 | 9.4 | 9.8 | 7.5 | ||
| 1990 | 3.9 | 3.8 | 6.5 | 3.1 | 4.7 | 11.1 | 6.9 | 11.3 | 5.7 | 8.3 | 5.5 | 6.6 | 4.3 | 4.7 | 9.8 | 6.5 | 5.9 | ||
| 1989 | 2.0 | 2.6 | 3.5 | 3.1 | 2.5 | 2.6 | 2.7 | 5.7 | 3.9 | 4.1 | 5.3 | 2.4 | 2.3 | 3.1 | 3.6 | 4.4 | 3.3 | ||
| 1988 | 2.2 | 3.0 | 3.9 | 2.3 | 1.7 | 4.6 | 1.5 | 2.3 | 2.0 | 2.1 | 2.5 | 3.9 | 3.0 | 2.5 | 2.8 | 2.2 | 2.6 | ||
| 1987 | 0.0 | 13.3 | 2.4 | 2.3 | 2.1 | 5.7 | 3.1 | 2.5 | 2.4 | 3.7 | 3.9 | 3.4 | 3.9 | 2.3 | 3.7 | 3.4 | 3.1 | ||
| 1986 | 3.8 | 10.5 | 11.3 | 2.8 | 6.4 | 5.9 | 13.0 | 11.1 | 12.9 | 5.9 | 6.9 | 11.4 | 9.1 | 7.4 | 9.7 | 8.1 | 8.4 | ||
| 1985 | 10.0 | 6.7 | 5.8 | 4.7 | 5.3 | 5.0 | 50.0 | 35.3 | 18.2 | 15.8 | 20.0 | 10.7 | 9.1 | 5.1 | 15.3 | 17.5 | 9.3 | ||
| 1984 | 60.0 | 20.0 | 60.0 | 25.0 | 50.0 | 41.7 | 3.4 | 9.1 | 3.7 | 2.9 | 12.9 | 8.8 | 16.3 | 38.1 | 12.2 | 6.5 | 13.1 | ||
| 1983 | 50.0 | 16.7 | 40.0 | 30.8 | 0.0 | 7.7 | 16.7 | 9.1 | 0.0 | - | 25.0 | 9.1 | 20.7 | 22.2 | 10.0 | 21.4 | 18.0 | ||
| 1982 | - | 9.1 | - | 0.0 | 0.0 | 14.3 | - | 9.1 | - | 23.1 | - | 28.6 | 20.0 | 0.0 | 12.0 | 23.1 | 15.3 | ||
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 | 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 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 |
| Dependent young | 0 | 0 | 0 | 0 | 0 | 5 | 1 | 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 | 1 | 0 | 3 | 2 | 2 | 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 | 1 | 2 | 7 | 11 | 7 | 17 | 8 | 5 | 4 | 2 | 0 | 1 |
| 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 | 1 | 4 | 2 | 1 | 2 | 0 | 0 | 0 | 0 | 0 | 0 |
| Nest with eggs | 0 | 0 | 1 | 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 |
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 | 0.2 | 0.0 | 0.0 | 0.0 | 1.8 | 0.0 | 0.0 | 0.3 | 0.0 | 0.0 | 0.0 |
| Previous years | |||||||||||
| All previous years | 0.2 | 0.0 | 0.0 | 0.0 | 1.7 | 0.0 | 0.0 | 0.3 | 0.0 | 0.0 | 0.0 |
| Previous 30 years | 0.3 | 0.0 | 0.0 | 0.0 | 1.8 | 0.0 | 0.0 | 0.3 | 0.0 | 0.0 | 0.0 |
| Previous 20 years | 0.4 | 0.0 | 0.0 | 0.0 | 1.4 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 |
| 10 year groups | |||||||||||
| [2007,2017) | 0.1 | 0.0 | 0.0 | 0.0 | 2.1 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 |
| [1997,2007) | 0.7 | 0.0 | 0.0 | 0.0 | 0.8 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 |
| [1987,1997) | 0.0 | 0.0 | 0.0 | 0.1 | 2.4 | 0.0 | 0.0 | 1.0 | 0.1 | 0.0 | 0.0 |
| 5 year groups | |||||||||||
| [2012,2017) | 0.0 | 0.0 | 0.0 | 0.0 | 1.4 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 |
| [2007,2012) | 0.2 | 0.0 | 0.0 | 0.0 | 2.8 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 |
| [2002,2007) | 0.2 | 0.0 | 0.0 | 0.0 | 1.4 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 |
| [1997,2002) | 1.2 | 0.0 | 0.0 | 0.0 | 0.2 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 |
| [1992,1997) | 0.0 | 0.0 | 0.0 | 0.2 | 0.2 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 |
| [1987,1992) | 0.0 | 0.0 | 0.0 | 0.0 | 4.6 | 0.0 | 0.0 | 2.0 | 0.2 | 0.0 | 0.0 |
| Year | |||||||||||
| 2017 | 0.0 | 0.0 | 0.0 | 0.0 | 6.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 |
| 2016 | 0.0 | 0.0 | 0.0 | 0.0 | 5.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 |
| 2015 | 0.0 | 0.0 | 0.0 | 0.0 | 1.0 | 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 | 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 | 1.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 |
| 2011 | 1.0 | 0.0 | 0.0 | 0.0 | 8.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 |
| 2010 | 0.0 | 0.0 | 0.0 | 0.0 | 1.0 | 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 | 5.0 | 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 |
| 2006 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 |
| 2005 | 1.0 | 0.0 | 0.0 | 0.0 | 1.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 |
| 2004 | 0.0 | 0.0 | 0.0 | 0.0 | 5.0 | 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 | 1.0 | 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 | 1.0 | 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 | 4.0 | 0.0 | 0.0 | 0.0 | 1.0 | 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 | 1.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 |
| 1992 | 0.0 | 0.0 | 0.0 | 1.0 | 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 | 1.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 |
| 1989 | 0.0 | 0.0 | 0.0 | 0.0 | 11.0 | 0.0 | 0.0 | 2.0 | 0.0 | 0.0 | 0.0 |
| 1988 | 0.0 | 0.0 | 0.0 | 0.0 | 9.0 | 0.0 | 0.0 | 4.0 | 0.0 | 0.0 | 0.0 |
| 1987 | 0.0 | 0.0 | 0.0 | 0.0 | 2.0 | 0.0 | 0.0 | 4.0 | 1.0 | 0.0 | 0.0 |
| 1986 | 0.0 | 0.0 | 0.0 | 0.0 | 1.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 |
| 1985 | 0.0 | 0.0 | 0.0 | 0.0 | 3.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 |
| 1984 | 0.0 | 0.0 | 0.0 | 0.0 | 2.0 | 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 Chestnut Teal for 2017.
The red circles are the grid cells where Chestnut Teal 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 Chestnut Teal was 64.7% (eg grid number Y8) and the minimum was 0.1% (eg grid number J14). 
Distribution - all years
This map shows the observed distribution of the Chestnut Teal for all years.
The red circles are the grid cells where Chestnut Teal 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 Chestnut Teal was 63.9% (eg grid number Y8) and the minimum was 0.0% (eg grid number K16). 
Breeding map
Breeding - 2017
This map shows the breeding distribution of the Chestnut Teal for 2017.
The red circles are the grid cells where breeding activity for Chestnut Teal have been reported.
The size of the circle represents the number of reports. 
Breeding - all years
This map shows the breeding distribution of the Chestnut Teal for all years.
The red circles are the grid cells where breeding activity for Chestnut Teal have been reported.
The size of the circle represents the number of reports. 