Graph

Country
Migration site
Species
Period    
Sex
Age
Plumage
Present
Favourites

Year Totals Observation hours
2006 0 61:32
2007 1 211:28
2008 46 460:04
2009 19 365:00
2010 74 637:04
2011 47 348:08
2012 35 333:29
2013 22 281:38
2014 7 156:47
2015 14 117:20
2016 14 142:02
2017 30 179:22
2018 3 222:16
2019 40 246:33
2020 30 165:57
 
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