Graph

Common Nighthawk
(Chordeiles minor)

Breeding Bird Survey (BBS) - Canadian analysis

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

Geographic area or population: Lower Great Lakes / St. Lawrence Plain

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
19700.1720.0980.304
19710.1670.0990.307
19720.1560.0910.271
19730.1530.0930.272
19740.1490.0950.267
19750.1390.0870.228
19760.1330.0870.223
19770.1220.0690.196
19780.1190.0740.19
19790.1170.0750.185
19800.1140.0760.185
19810.1050.0650.161
19820.1030.0690.164
19830.0940.0610.14
19840.0920.0590.14
19850.0920.0650.15
19860.0840.0550.13
19870.0830.0570.128
19880.0780.0520.118
19890.0730.0450.107
19900.070.0450.105
19910.0690.0460.105
19920.0650.0430.098
19930.0620.0390.093
19940.0610.0420.098
19950.0550.0320.08
19960.0560.0390.089
19970.0540.0360.085
19980.0510.0340.08
19990.0490.0330.078
20000.0470.030.074
20010.0430.0270.07
20020.0410.0240.064
20030.040.0240.065
20040.0380.0230.063
20050.0360.020.058
20060.0360.0220.061
20070.0330.0190.053
20080.0320.0190.053
20090.0310.0180.054
20100.0280.0150.049
20110.0280.0150.048
20120.0270.0150.047
20130.0250.0130.046
20140.0240.0130.045
20150.0230.0120.044
20160.0220.0110.042

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