Graph

American Black Duck
(Anas rubripes)

Eastern Waterfowl Breeding Ground Survey

Additional information on: Eastern Waterfowl Breeding Ground Survey

Geographic area or population: Eastern Boreal Shield

Graph showing the trend of the species through out the observed years
 
Listing of the individual data points that make up the graph
YearEstimated Population95% Lower Credible Interval95% Upper Credible Interval
1990157138125178201680
1991148838117667194553
1992139388110219178808
199312957699829167783
199412596298057166994
1995155964123258209162
1996151240120958189593
1997155044124509193675
1998150251121523188768
1999191137155335240278
2000190125154135233530
2001166894136210208512
2002171845140068218210
2003159748128868200231
2004168811137249211768
2005132608106811166854
2006161776130899200963
2007185149148756236893
2008165690135059205189
2009151234123188190376
2010149212120413186889
2011158040129243197908
2012164988134328206577
2013146521116224185265
2014166493135294208744
2015138342111616172318
2016156100126176198603
2017131905106334166749

Notes on numeric data: Ex represents 10 to the power of x; For example 1.2345E-2 is equivalent to 0.012345