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	322	129	1270
1971	327	133	1290
1972	91.5	56.6	145
1973	87.9	53.6	140
1974	88.4	54.4	140
1975	89.9	55.8	142
1976	90.9	57.1	144
1977	90.6	56.7	144
1978	89.4	55.9	140
1979	91.3	57.4	143
1980	93.9	58.7	148
1981	93.8	58.5	148
1982	94.2	59.3	149
1983	94.9	59.9	149
1984	95.1	59.6	150
1985	93	58.9	143
1986	92.7	58.8	144
1987	92.1	58.3	145
1988	92.4	58.6	143
1989	94	60.1	146
1990	92.7	59.5	143
1991	95.7	60.5	148
1992	92.1	59.3	142
1993	93.6	59.6	145
1994	97.4	62.4	151
1995	98.7	63.7	154
1996	94.8	60.9	147
1997	95.8	61.7	149
1998	97.5	62.2	152
1999	100	64.2	156
2000	101	64.6	158
2001	98.5	63	155
2002	105	66.7	169
2003	102	64.9	167
2004	108	68.5	180
2005	101	64.7	167
2006	105	66.5	181
2007	105	65.7	185
2008	103	64.5	187
2009	110	68.6	202
2010	106	65.5	203
2011	111	68.3	215
2012	113	68.7	231
2013	117	71	241
2014	120	72.4	256
2015	118	70.6	271
2016	119	70.2	287

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