Graph

Country
Migration site
Species
Period    
Sex
Age
Plumage
Present
Favourites

Year Totals Observation hours
2006 15 61:32
2007 36 211:28
2008 251 460:04
2009 406 365:00
2010 673 637:04
2011 1640 348:08
2012 279 333:29
2013 515 281:38
2014 791 156:47
2015 47 117:20
2016 100 142:02
2017 77 179:22
2018 454 222:16
2019 295 246:33
2020 53 165:57
 
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