Graph

Country
Migration site
Species
Period    
Sex
Age
Plumage
Present
Favourites

Year Totals Observation hours
2006 0 61:32
2007 3 211:28
2008 21 460:04
2009 3 365:00
2010 13 637:04
2011 6 348:08
2012 22 333:29
2013 7 281:38
2014 0 156:47
2015 7 117:20
2016 65 142:02
2017 18 179:22
2018 5 222:16
2019 62 112:27
 
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