Graph

Country
Migration site
Species
Period    
Sex
Age
Plumage
Present
Favourites

Year Totals Observation hours
2006 2 61:32
2007 2 211:28
2008 3 460:04
2009 6 365:00
2010 56 637:04
2011 4 348:08
2012 4 333:29
2013 15 281:38
2014 6 156:47
2015 4 117:20
2016 1 142:02
2017 3 179:22
2018 1 222:16
2019 5 187:41
 
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