Graph

Country
Migration site
Species
Period
Sex
Age
Plumage
Present
Favourites

Year Totals Observation hours
2006 0 23:40
2007 0 71:05
2008 4 94:25
2009 0 91:45
2010 2 159:55
2011 7 208:42
2012 1 196:45
2013 22 239:26
2014 17 218:15
2015 30 145:35
2016 48 217:52
2017 32 191:09
2018 39 243:43
2019 16 140:00
 
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