Graph

Country
Migration site
Species
Period    
Sex
Age
Plumage
Present
Favourites

Year Totals Observation hours
2006 25 61:32
2007 48 211:28
2008 136 460:04
2009 355 365:00
2010 241 637:04
2011 306 348:08
2012 71 333:29
2013 65 281:38
2014 47 156:47
2015 16 117:20
2016 22 142:02
2017 60 179:22
2018 229 222:16
2019 15 143:55
 
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