Graph

Country
Migration site
Species
Period    
Sex
Age
Plumage
Present
Favourites

Year Totals Observation hours
2006 0 61:32
2007 28 211:28
2008 231 460:04
2009 137 365:00
2010 394 637:04
2011 65 348:08
2012 94 333:29
2013 26 281:38
2014 32 156:47
2015 10 117:20
2016 0 142:02
2017 2 179:22
2018 0 222:16
2019 0 246:33
 
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