Graph

Northern Harrier
(Circus hudsonius)

Breeding Bird Survey (BBS) - Canadian analysis

Additional information on: Breeding Bird Survey (BBS) - Canadian analysis

Geographic area or population: Northern Rockies

Graph showing the trend of the species through out the observed years
 
Listing of the individual data points that make up the graph
YearAnnual IndexLower limitUpper limit
19700.0360.0160.076
19710.0360.0170.073
19720.0360.0170.074
19730.0350.0160.068
19740.0350.0160.07
19750.0350.0180.067
19760.0350.0180.07
19770.0360.0190.071
19780.0360.0190.072
19790.0340.0170.063
19800.0340.0160.061
19810.0350.0180.065
19820.0350.0190.064
19830.0340.0170.06
19840.0340.0170.058
19850.0340.0190.061
19860.0340.0190.061
19870.0340.0180.059
19880.0360.0210.071
19890.0340.0190.059
19900.0330.0160.055
19910.0340.020.063
19920.0330.0180.059
19930.0340.020.062
19940.0330.0180.056
19950.0330.0190.056
19960.0320.0160.051
19970.0330.0190.056
19980.0330.0190.057
19990.0340.0210.065
20000.0330.0190.058
20010.0320.0190.054
20020.0310.0160.05
20030.0320.0170.052
20040.0330.0190.056
20050.0310.0150.05
20060.0310.0170.051
20070.0320.0180.054
20080.0310.0170.053
20090.0310.0170.052
20100.0310.0170.053
20110.0310.0160.055
20120.0310.0160.054
20130.030.0150.053
20140.0310.0160.055
20150.0310.0160.058
20160.030.0160.058

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