Graph

Northern Harrier
(Circus hudsonius)

Breeding Bird Survey (BBS) - Canadian analysis

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

Geographic area or population: Boreal Taiga Plains

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
19700.5840.390.95
19710.5730.3810.916
19720.5760.4040.902
19730.5240.3790.749
19740.5260.3710.796
19750.5060.3570.748
19760.5120.3570.839
19770.4980.3610.747
19780.5810.4130.92
19790.4270.3030.602
19800.420.3040.589
19810.4660.3450.717
19820.430.3190.605
19830.5250.3760.855
19840.3850.280.52
19850.3820.2930.514
19860.410.3090.616
19870.3880.2890.564
19880.3750.2830.542
19890.3250.2390.463
19900.3480.2670.478
19910.3260.250.443
19920.3150.2430.421
19930.3290.2510.458
19940.3230.2510.445
19950.310.2370.429
19960.2960.2270.408
19970.3260.2520.479
19980.3050.2330.428
19990.2620.1990.341
20000.2880.2210.398
20010.2740.210.374
20020.2380.180.314
20030.2510.1910.335
20040.2290.1710.314
20050.2540.1920.373
20060.2370.1790.327
20070.2670.1950.445
20080.2140.1590.295
20090.2180.1620.316
20100.2070.1520.3
20110.2230.1620.333
20120.2080.1480.306
20130.2120.1520.324
20140.2080.1530.312
20150.1940.140.284
20160.2090.1480.335

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