Graph

Country
Migration site
Species
Period    
Sex
Age
Plumage
Present
Favourites

Year Totals Observation hours
2009 72 351:50
2010 63 450:21
2011 118 633:10
2012 80 386:37
2013 20 378:15
2014 58 570:41
2015 62 320:04
2016 21 188:50
2017 27 125:15
2018 44 92:33
2019 36 89:07
 
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