Graph

Gray Partridge
(Perdix perdix)

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
19700.3920.2910.555
19710.3530.2720.471
19720.380.2860.533
19730.4190.3120.61
19740.4420.3230.765
19750.3680.2830.492
19760.3680.2830.492
19770.3510.2750.458
19780.4270.3330.56
19790.3940.3080.512
19800.4630.3620.63
19810.4010.3190.53
19820.4520.3520.614
19830.4680.3720.608
19840.3910.3090.501
19850.3890.3060.51
19860.3610.2870.472
19870.4050.3260.527
19880.4940.3910.639
19890.4980.4030.647
19900.4620.370.6
19910.3760.2970.479
19920.390.3170.495
19930.3440.2810.434
19940.2730.2170.35
19950.2990.2390.378
19960.3030.2440.393
19970.2380.1880.303
19980.2760.2210.357
19990.2860.230.374
20000.2780.2250.352
20010.30.2470.381
20020.2580.2060.321
20030.3140.2510.408
20040.3410.2680.472
20050.2860.2280.369
20060.2990.2380.476
20070.3140.2480.409
20080.2910.230.379
20090.2790.2210.385
20100.2210.1750.283
20110.2170.170.288
20120.2340.1850.301
20130.240.1890.311
20140.2090.1630.27
20150.2290.1790.298
20160.2770.220.361

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