Graph

Country
Migration site
Species
Period    
Sex
Age
Plumage
Present
Favourites

Year Totals Observation hours
2006 26 23:40
2007 22 71:05
2008 37 94:25
2009 41 91:45
2010 243 159:55
2011 316 208:42
2012 355 196:45
2013 361 239:26
2014 190 218:15
2015 75 145:35
2016 203 217:52
2017 107 191:09
2018 226 243:43
2019 7 140:00
 
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