Graph

Country
Migration site
Species
Period
Sex
Age
Plumage
Present
Favourites

Year Totals Observation hours
2006 16 23:40
2007 6 71:05
2008 47 94:25
2009 107 91:45
2010 76 159:55
2011 27 208:42
2012 129 196:45
2013 54 239:26
2014 95 218:15
2015 10 145:35
2016 25 217:52
2017 12 191:09
2018 178 243:43
2019 0 140:00
 
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