Graph

Country
Migration site
Species
Period    
Sex
Age
Plumage
Present
Favourites

Year Totals Observation hours
2006 20 23:40
2007 23 71:05
2008 49 94:25
2009 47 91:45
2010 131 159:55
2011 110 208:42
2012 128 196:45
2013 118 239:26
2014 83 218:15
2015 31 145:35
2016 56 217:52
2017 37 191:09
2018 31 243:43
2019 13 140:00
 
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