Graph

Country
Migration site
Species
Period    
Sex
Age
Plumage
Present
Favourites

Year Totals Observation hours
2006 0 61:32
2007 2 211:28
2008 10 460:04
2009 6 365:00
2010 13 637:04
2011 6 348:08
2012 4 333:29
2013 2 281:38
2014 5 156:47
2015 2 117:20
2016 4 142:02
2017 7 179:22
2018 3 222:16
2019 7 106:24
 
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