Graph

Virginia Rail
(Rallus limicola)

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
19700.0190.0130.031
19710.0210.0140.041
19720.0220.0150.036
19730.020.0140.031
19740.0210.0150.034
19750.0190.0140.032
19760.0210.0150.033
19770.020.0150.032
19780.020.0140.032
19790.020.0140.03
19800.0210.0150.032
19810.020.0150.032
19820.0230.0160.041
19830.0210.0150.034
19840.020.0150.03
19850.0210.0160.035
19860.0210.0160.032
19870.020.0150.03
19880.0210.0160.03
19890.020.0150.029
19900.0220.0170.032
19910.0230.0180.038
19920.0220.0160.03
19930.0220.0170.03
19940.0260.020.037
19950.0250.0190.034
19960.030.0230.047
19970.0280.0210.039
19980.0280.0220.039
19990.0330.0240.05
20000.0270.0210.037
20010.0260.020.037
20020.0270.0210.037
20030.030.0220.042
20040.0330.0250.049
20050.0310.0240.043
20060.0260.020.037
20070.0290.0220.041
20080.0330.0250.045
20090.030.0220.042
20100.0340.0260.046
20110.0390.0290.056
20120.0340.0250.051
20130.0350.0270.048
20140.0450.0330.067
20150.040.030.056
20160.0330.0240.047

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