Graph

Country
Migration site
Species
Period    
Sex
Age
Plumage
Present
Favourites

Year Totals Observation hours
2006 0 61:32
2007 5 211:28
2008 4 460:04
2009 3 365:00
2010 4 637:04
2011 1 348:08
2012 1 333:29
2013 2 281:38
2014 0 156:47
2015 0 117:20
2016 5 142:02
2017 2 179:22
2018 0 222:16
2019 7 246:33
2020 1 165:57
 
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