Graph

Boreal Chickadee
(Poecile hudsonicus)

Picture of logo Christmas Bird Count (CBC)

Additional information on: Christmas Bird Count (CBC)

Geographic area or population: Canada

Graph showing the trend of the species through out the observed years
 
Listing of the threshold values that appear on the graph
Population below lowest acceptable levelGoal
9.448 12.597
Listing of the individual data points that make up the graph
YearAnnual indexLower limitUpper limit
197012.97.5329.5
197112.67.3128.5
197212.77.4628.1
197312.57.3828.2
197412.37.2627.9
197512.37.2627
197611.97.126.4
197711.76.7927.1
197811.87.0725.5
197911.56.8924.9
198011.87.0825.4
198111.97.1426
198211.56.8326.2
198311.97.1526
198412.27.3225.6
198511.97.126.3
198611.67.1324.4
198711.46.8524.3
198811.66.9425.7
1989127.1824.9
1990116.5823.3
199110.96.6222.8
199211.56.8725.5
199311.87.0924.9
1994127.1626.7
199512.37.2527.9
199611.86.9626.8
199712.27.1427.8
199812.37.327.5
199912.57.2230.2
200011.66.6826.6
200112.17.0327.7
200211.86.7727.4
200312.16.8828.7
200411.76.727.5
200512.47.0130.8
200611.86.7527.8
200712.57.1229.8
200811.96.6329.9
200912.77.3829.1
201012.47.1330
201112.37.0229.1
201212.47.1429.3
201312.36.7830.8
201412.77.231
201512.36.831
201612.46.7731.6

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