Graph

Western Bluebird
(Sialia mexicana)

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 individual data points that make up the graph
YearAnnual IndexLower limitUpper limit
19700.0060.0030.013
19710.0060.0030.013
19720.0070.0030.014
19730.0070.0040.014
19740.0080.0040.015
19750.0080.0040.016
19760.0090.0050.017
19770.0090.0050.018
19780.010.0060.019
19790.010.0060.019
19800.0110.0060.02
19810.0120.0070.022
19820.0130.0070.023
19830.0130.0080.024
19840.0140.0090.026
19850.0150.0090.028
19860.0170.010.03
19870.0180.0110.031
19880.0190.0120.034
19890.020.0130.035
19900.0210.0130.037
19910.0230.0150.042
19920.0270.0170.054
19930.0270.0170.047
19940.0290.0180.05
19950.0420.0250.124
19960.0370.0240.07
19970.0350.0220.06
19980.0390.0250.068
19990.0560.0350.139
20000.0460.0280.087
20010.0590.0360.176
20020.0560.0330.121
20030.0620.0360.146
20040.0780.0470.198
20050.0760.0440.167
20060.0950.0560.254
20070.0920.0510.23
20080.0960.0540.206
20090.1010.0530.247
20100.1030.0540.231
20110.1350.0730.354
20120.1560.0820.48

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