Graph

Red-headed Woodpecker
(Melanerpes erythrocephalus)

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
19700.2250.120.606
19710.2220.120.592
19720.2110.1120.563
19730.2260.1250.552
19740.1930.1050.47
19750.2040.1090.676
19760.1980.1110.524
19770.2010.1110.543
19780.170.0960.396
19790.1680.0940.403
19800.1680.0980.358
19810.1820.1070.467
19820.1720.1020.386
19830.160.0940.338
19840.1480.0850.343
19850.1490.0870.348
19860.1430.0860.305
19870.1430.0850.3
19880.1280.0760.28
19890.1180.0680.236
19900.1430.0880.344
19910.130.080.276
19920.1290.0790.276
19930.1140.0690.223
19940.1330.080.352
19950.1040.0640.206
19960.110.0670.222
19970.1060.0650.208
19980.1020.0620.214
19990.0920.0550.178
20000.0930.0560.182
20010.090.0530.178
20020.0940.0570.187
20030.0920.0560.194
20040.0960.0570.199
20050.0950.0570.204
20060.0780.0450.16
20070.0780.0460.159
20080.0790.0460.164
20090.0780.0460.163
20100.0830.0480.177
20110.0740.0420.165
20120.0750.0410.198

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