Graph

Country
Migration site
Species
Period    
Sex
Age
Plumage
Present
Favourites

Year Totals Observation hours
2006 16 61:32
2007 149 211:28
2008 292 460:04
2009 431 365:00
2010 368 637:04
2011 266 348:08
2012 147 333:29
2013 96 281:38
2014 223 156:47
2015 39 117:20
2016 9 142:02
2017 9 179:22
2018 81 222:16
2019 28 246:33
 
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