Graph

Northern Harrier
(Circus cyaneus)

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
19700.8680.5331.64
19710.820.5071.55
19720.7970.5221.34
19730.6970.4731.03
19740.7220.4711.17
19750.6870.4611.08
19760.6870.4541.24
19770.6540.4421.04
19780.7610.5211.3
19790.5320.3580.782
19800.5170.3550.749
19810.590.4140.945
19820.5220.3730.757
19830.6430.4471.09
19840.4590.3190.658
19850.4530.3290.625
19860.4870.3540.752
19870.4530.3250.713
19880.4310.3120.63
19890.3580.2480.502
19900.3840.280.542
19910.3570.2610.489
19920.3430.2480.471
19930.3580.2630.518
19940.3450.2550.491
19950.3210.2380.445
19960.3110.2260.443
19970.3380.2520.497
19980.3140.230.46
19990.2650.1920.358
20000.2960.2210.428
20010.2750.2060.384
20020.2330.1680.318
20030.2470.180.349
20040.2220.1590.308
20050.2470.1780.364
20060.2270.1630.324
20070.2520.1750.432
20080.2010.1430.286
20090.20.140.289
20100.1880.1290.273
20110.20.1380.307
20120.1830.1250.278

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