Graph

Pied-billed Grebe
(Podilymbus podiceps)

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 threshold values that appear on the graph
Population below lowest acceptable levelGoal
0.218 0.356
Listing of the individual data points that make up the graph
YearAnnual IndexLower limitUpper limit
19700.2650.180.437
19710.280.1920.442
19720.3110.2150.476
19730.2870.2080.422
19740.2380.1680.355
19750.3380.2380.567
19760.3350.2320.532
19770.3120.2230.506
19780.2750.1950.408
19790.3050.2220.448
19800.2530.1830.362
19810.2530.1850.386
19820.2280.1660.328
19830.2540.1840.367
19840.3010.2160.446
19850.3030.2180.47
19860.2850.2060.408
19870.2770.2020.406
19880.2670.1960.392
19890.240.1780.341
19900.2440.1780.338
19910.2490.1890.343
19920.2270.1710.304
19930.2140.1560.298
19940.3010.2260.413
19950.3090.230.421
19960.3220.2420.439
19970.3360.2520.472
19980.270.2060.361
19990.320.2430.45
20000.3410.260.47
20010.2390.1810.321
20020.240.1820.335
20030.2780.2070.383
20040.2710.2080.359
20050.3190.2410.432
20060.3810.2870.528
20070.4730.3370.702
20080.3430.2570.488
20090.320.2380.465
20100.2930.2160.407
20110.3950.2880.57
20120.4890.3510.728
20130.4640.330.708
20140.4840.3470.703
20150.5370.3940.767
20160.3750.2770.535

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