Graph

Country
Migration site
Species
Period    
Sex
Age
Plumage
Present
Favourites

Year Totals Observation hours
2006 0 61:32
2007 7 211:28
2008 11 460:04
2009 23 365:00
2010 404 637:04
2011 15 348:08
2012 21 333:29
2013 55 281:38
2014 104 156:47
2015 11 117:20
2016 24 142:02
2017 11 179:22
2018 29 222:16
2019 3 98:41
 
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