Graph

Northern Harrier
(Circus cyaneus)

Breeding Bird Survey (BBS) - Canadian analysis

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

Geographic area or population: Canada

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
19700.6530.5270.863
19710.6290.5110.828
19720.6170.5090.779
19730.5810.4880.702
19740.5780.480.723
19750.5490.4570.671
19760.5630.470.717
19770.5430.4540.664
19780.5580.4620.708
19790.50.4210.6
19800.4920.4170.586
19810.5090.4330.624
19820.4750.4050.567
19830.5280.4430.664
19840.4340.3660.514
19850.440.3770.515
19860.4520.3850.542
19870.4350.3730.524
19880.4270.3680.503
19890.390.3360.453
19900.3950.3420.462
19910.3750.3210.434
19920.3950.3440.465
19930.3830.3330.448
19940.3880.3360.451
19950.3620.3160.418
19960.3560.3080.413
19970.3550.3080.415
19980.3370.2910.392
19990.3320.2880.383
20000.3380.2950.393
20010.3230.280.375
20020.2950.250.344
20030.2950.2520.346
20040.2990.2580.35
20050.3090.2660.366
20060.2980.2570.349
20070.2950.2460.354
20080.2860.2460.341
20090.2910.250.347
20100.2680.2280.315
20110.2820.2420.336
20120.260.220.309

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