golden-crowned-kinglet
black-crowned-night-heron
fish-crow
CBC Data is provided by National Audubon Society and through the generous efforts of Bird Studies Canada and countless volunteers across the western hemisphere.
1
National Audubon Society (2010). The Christmas Bird Count Historical Results [Online]. Available http://www.christmasbirdcount.org [5/25/2017]
By Vasily Hall
https://www.linkedin.com/in/vasily-hall-91216618
The fish crow is superficially similar to the American crow, but is smaller (36_41 cm in length) and has a more silky smooth plumage by comparison. The upperparts have a blue or blue-green sheen, while the underparts have a more greenish tint to the black. The eyes are dark brown. The differences are often only really apparent between the two species when seen side by side or when heard calling. The bill is usually somewhat slimmer than the American crow, but is only readily distinguishable if both species are seen together
Fish Crow
Corvus ossifragus
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The sum of all observed individuals for the selected query region and species. This is computed as the sum of the individual CBC_OBS.HOW_MANY values from each observation.
The average of the individual number per party hour values for each count circle in the region. In the case of no observations of a given species by a circle within the query region, a value of 0 per party hour will be averaged in.
The number of count circles in the selected query region reporting the selected species in the given count year.
The total number of observers on count circles reporting the selected species in the selected query region for the given count year.
0
30000
60000
90000
120000
150000
2015
2014
2013
2012
0.0
0.2
0.4
0.6
0.8
1.0
2015
2014
2013
2012
300
350
400
2015
2014
2013
2012
0
50
100
150
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250
2015
2014
2013
2012
Species Number
Number by Party Hours
Reporting Counts
Reporting Observers