Graph

Country
Migration site
Species
Period    
Sex
Age
Plumage
Present
Favourites

Year Totals Observation hours
2006 0 61:32
2007 0 211:28
2008 16 460:04
2009 16 365:00
2010 39 637:04
2011 20 348:08
2012 22 333:29
2013 17 281:38
2014 8 156:47
2015 5 117:20
2016 0 142:02
2017 0 179:22
2018 27 222:16
2019 0 246:33
 
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