Graph

Country
Migration site
Species
Period    
Sex
Age
Plumage
Present
Favourites

Year Totals Observation hours
2006 0 61:32
2007 37 211:28
2008 41 460:04
2009 9 365:00
2010 43 637:04
2011 8 348:08
2012 3 333:29
2013 1 281:38
2014 8 156:47
2015 2 117:20
2016 1 142:02
2017 4 179:22
2018 5 222:16
2019 6 246:33
 
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