Graph

Country
Migration site
Species
Period    
Sex
Age
Plumage
Present
Favourites

Year Totals Observation hours
2006 0 61:32
2007 2 211:28
2008 13 460:04
2009 5 365:00
2010 72 637:04
2011 18 348:08
2012 20 333:29
2013 31 281:38
2014 8 156:47
2015 7 117:20
2016 4 142:02
2017 17 179:22
2018 14 222:16
2019 2 98:41
 
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