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: 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
19700.2640.2050.362
19710.2630.2030.37
19720.2650.2070.362
19730.240.1940.31
19740.2290.1830.305
19750.3030.2310.437
19760.2790.2170.39
19770.2390.1880.328
19780.230.1830.307
19790.2390.1940.306
19800.2270.1850.286
19810.2130.1740.276
19820.1930.1590.24
19830.2280.1860.291
19840.260.2070.341
19850.2430.1950.324
19860.2430.1960.312
19870.2590.2090.337
19880.220.180.285
19890.190.1570.235
19900.1980.1650.248
19910.1880.1570.232
19920.1880.1570.229
19930.2070.1680.268
19940.2870.2350.358
19950.3240.260.418
19960.3770.3050.485
19970.4160.3350.542
19980.3710.2890.501
19990.4130.3280.545
20000.3330.270.423
20010.3250.2630.433
20020.2540.2050.325
20030.2450.2020.302
20040.2510.2090.309
20050.2450.2030.302
20060.2730.2250.349
20070.3380.2670.438
20080.2490.2070.321
20090.2850.2330.367
20100.2790.2290.351
20110.4010.3190.523
20120.4090.3270.531
20130.3680.2940.486
20140.3650.2940.478
20150.3630.2950.464
20160.2820.2280.358

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