Graph

Great Blue Heron
(Ardea herodias)

Breeding Bird Survey (BBS) - Canadian analysis

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

Geographic area or population: Great Basin

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
19700.1420.0640.286
19710.1460.0670.297
19720.1460.0710.281
19730.1460.0690.276
19740.1510.0730.275
19750.1510.0710.274
19760.1560.080.28
19770.1580.0790.286
19780.1580.0770.284
19790.1760.0990.336
19800.160.0760.276
19810.1720.0980.302
19820.1660.0770.277
19830.1840.1070.323
19840.1730.090.273
19850.190.1160.325
19860.1840.1030.308
19870.1910.1170.308
19880.1880.1040.305
19890.1970.1190.33
19900.1950.1220.31
19910.210.140.363
19920.2050.1330.325
19930.1940.1050.281
19940.2130.1410.348
19950.2110.1290.313
19960.2230.1490.375
19970.2190.1380.336
19980.2230.1460.349
19990.2290.1470.357
20000.230.1480.359
20010.2240.1280.323
20020.2450.1660.39
20030.2620.1810.449
20040.2650.1820.486
20050.2450.1520.372
20060.2570.1650.393
20070.2510.1510.388
20080.2590.1630.417
20090.2690.1680.443
20100.2540.140.39
20110.2470.1170.389
20120.2770.1670.459
20130.2690.140.461
20140.2790.150.465
20150.2860.1640.498
20160.2870.1590.497

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