Graph

Northern Harrier
(Circus hudsonius)

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
19700.4890.3250.711
19710.530.3620.786
19720.4540.3060.675
19730.4260.2850.62
19740.5220.3660.762
19750.3470.2260.494
19760.4760.3380.688
19770.4160.2820.61
19780.3960.2720.578
19790.3660.2370.523
19800.4480.320.633
19810.4450.320.636
19820.3960.2780.569
19830.4990.3540.709
19840.3430.2270.49
19850.4010.2810.58
19860.3470.2440.496
19870.4290.3080.618
19880.3870.2740.55
19890.3070.2090.433
19900.2950.2060.423
19910.5280.3760.767
19920.4650.340.677
19930.3560.2490.501
19940.4470.3370.611
19950.4150.3140.575
19960.4990.3550.708
19970.3320.2360.458
19980.3660.2650.506
19990.3740.2740.512
20000.3150.230.429
20010.3440.2540.473
20020.3640.2610.515
20030.3060.2180.431
20040.2760.1930.392
20050.2730.1910.382
20060.3310.2370.466
20070.2810.2060.391
20080.3260.2290.472
20090.2950.2140.418
20100.2710.190.373
20110.250.1780.349
20120.2620.1810.364
20130.2470.1710.353
20140.2280.1560.321
20150.2260.1510.322
20160.2110.1440.305

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