Graph

American Black Duck
(Anas rubripes)

Eastern Waterfowl Breeding Ground Survey

Additional information on: Eastern Waterfowl Breeding Ground Survey

Geographic area or population: Eastern survey core area

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
1990589462512132685966
1991597341513409702217
1992568902495848666172
1993547057468919642524
1994505971439036594357
1995593185512286695640
1996706240618353816194
1997593196521284686471
1998628492553745722226
1999711376629718817790
2000656050580895750629
2001609651535778702425
2002698678617398803601
2003642524562754739548
2004643323564448742082
2005612149536501712671
2006628929554679725233
2007729211642111845741
2008633518557695729308
2009593679520213683269
2010561486492448646836
2011541101476224618056
2012602018526276693890
2013625082548814719499
2014610873535127705353
2015534053466644614877
2016606197526073708060
2017541342470241630121

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