Graph

Ruffed Grouse
(Bonasa umbellus)

Breeding Bird Survey (BBS) - Canadian analysis

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

Geographic area or population: North America

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
19700.4510.3370.654
19710.4260.3190.65
19720.4130.3170.572
19730.4190.3210.577
19740.430.3330.592
19750.5490.3990.87
19760.4250.330.597
19770.4780.3620.676
19780.50.3680.753
19790.5510.4020.947
19800.4030.3160.554
19810.3990.3120.566
19820.4130.3280.574
19830.4080.3090.578
19840.4270.3240.612
19850.4020.3110.564
19860.4030.3060.553
19870.3830.2960.54
19880.4140.3170.612
19890.4240.3290.578
19900.4250.3330.644
19910.4310.3440.64
19920.3990.3170.538
19930.4190.3250.641
19940.3950.3130.529
19950.3950.3070.551
19960.4870.3920.686
19970.4120.3240.581
19980.3910.3120.526
19990.3870.3160.52
20000.3770.3070.482
20010.4350.3490.638
20020.4640.3690.636
20030.4350.3410.634
20040.4150.3220.59
20050.4080.3120.626
20060.3870.3050.504
20070.4370.3520.559
20080.4950.3960.677
20090.5260.4240.699
20100.3850.310.513
20110.4950.3940.676
20120.360.2840.482
20130.5410.4340.736
20140.5590.4440.75
20150.4080.3330.512
20160.3710.2910.478

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