Graph

Northern Harrier
(Circus hudsonius)

Breeding Bird Survey (BBS) - Canadian analysis

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

Geographic area or population: North America

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
19700.4820.4320.549
19710.4670.4190.527
19720.4620.4180.516
19730.4620.4190.512
19740.4530.410.503
19750.4350.3940.482
19760.4570.4150.509
19770.4320.3920.477
19780.450.4080.503
19790.4240.3880.466
19800.420.3840.458
19810.4280.3910.472
19820.4420.4040.487
19830.4460.4090.496
19840.3970.3630.441
19850.3880.3570.426
19860.3790.3480.417
19870.390.360.426
19880.4030.3720.44
19890.3620.3360.393
19900.3730.3460.403
19910.3620.3350.396
19920.4130.3830.452
19930.3960.3680.429
19940.3850.3580.418
19950.3660.340.397
19960.3780.3510.41
19970.3590.3340.393
19980.3690.3440.4
19990.3740.3460.405
20000.3840.3560.415
20010.3510.3250.381
20020.3340.3090.361
20030.3360.3130.363
20040.3440.3190.376
20050.350.3260.381
20060.3820.3510.422
20070.3520.3270.381
20080.3550.3290.391
20090.3320.3070.362
20100.3360.310.365
20110.3380.3120.37
20120.3240.2990.353
20130.3070.2840.334
20140.3040.280.334
20150.3150.2910.343
20160.3620.3330.397

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