Graph

Country
Migration site
Species
Period    
Sex
Age
Plumage
Present
Favourites

Year Totals Observation hours
2006 0 23:40
2007 0 71:05
2008 26 94:25
2009 0 91:45
2010 17 159:55
2011 0 208:42
2012 47 196:45
2013 12 239:26
2014 0 218:15
2015 23 145:35
2016 8 217:52
2017 4 191:09
2018 0 243:43
2019 0 140:00
 
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