Graph

Northwestern Crow
(Corvus caurinus)

Additional information on: Christmas Bird Count (CBC)

Listing of the individual data points that make up the graph
Year	Annual index	Lower limit	Upper limit
1970	403	224	688
1971	408	228	695
1972	422	240	716
1973	411	232	702
1974	415	237	705
1975	423	244	714
1976	426	246	718
1977	426	243	716
1978	420	242	701
1979	428	249	717
1980	445	260	747
1981	442	257	745
1982	446	260	752
1983	448	262	755
1984	453	264	768
1985	437	256	725
1986	440	258	733
1987	435	255	726
1988	432	256	715
1989	441	260	735
1990	433	254	715
1991	451	263	746
1992	425	250	704
1993	436	258	722
1994	453	268	743
1995	454	270	754
1996	437	258	720
1997	438	259	721
1998	440	259	724
1999	454	268	751
2000	454	269	755
2001	439	262	721
2002	464	278	775
2003	447	263	734
2004	470	279	788
2005	432	256	700
2006	447	265	732
2007	435	255	711
2008	419	247	688
2009	441	261	721
2010	417	249	684
2011	436	259	715
2012	432	257	709
2013	439	261	717
2014	448	266	736
2015	429	253	703
2016	419	246	685

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