Graph

Northern Harrier
(Circus cyaneus)

Breeding Bird Survey (BBS) - Canadian analysis

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

Geographic area or population: Lower Great Lakes / St. Lawrence Plain

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
19700.4850.3260.72
19710.5190.3560.766
19720.4510.30.673
19730.430.2810.628
19740.5210.3620.756
19750.3590.2290.525
19760.4830.3360.694
19770.4220.2870.608
19780.4080.2760.583
19790.3870.2590.559
19800.4660.3320.677
19810.460.3270.656
19820.4120.2870.59
19830.4970.3530.723
19840.3630.2380.524
19850.4090.2820.59
19860.3790.2590.546
19870.4590.3260.671
19880.4130.2940.588
19890.340.230.484
19900.330.2250.47
19910.5560.3860.837
19920.4910.3540.719
19930.3960.2830.569
19940.4560.3360.64
19950.4430.3240.619
19960.5280.3760.76
19970.3620.2580.505
19980.40.290.568
19990.3950.2890.554
20000.3450.2460.478
20010.3760.2710.529
20020.4010.2850.579
20030.340.2380.481
20040.3040.2080.434
20050.3080.2110.437
20060.3470.2460.496
20070.3170.220.448
20080.3580.2520.511
20090.3340.2340.477
20100.3060.2110.438
20110.2790.1850.405
20120.2980.20.431

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