Graph

Country
Migration site
Species
Period    
Sex
Age
Plumage
Present
Favourites

Year Totals Observation hours
2006 0 61:32
2007 34 211:28
2008 65 460:04
2009 8 365:00
2010 58 637:04
2011 60 348:08
2012 37 333:29
2013 24 281:38
2014 28 156:47
2015 0 117:20
2016 0 142:02
2017 0 179:22
2018 7 222:16
2019 0 98:41
 
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