Graph

Country
Migration site
Species
Period    
Sex
Age
Plumage
Present
Favourites

Year Totals Observation hours
2006 0 23:40
2007 91 71:05
2008 996 94:25
2009 299 91:45
2010 316 159:55
2011 321 208:42
2012 449 196:45
2013 449 239:26
2014 493 218:15
2015 62 145:35
2016 223 217:52
2017 411 191:09
2018 1283 243:43
2019 192 191:56
2020 497 104:53
2021 35 53:03
 
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