Graph

Country
Migration site
Species
Period    
Sex
Age
Plumage
Present
Favourites

Year Totals Observation hours
2006 0 61:32
2007 3 211:28
2008 0 460:04
2009 1 365:00
2010 2 637:04
2011 9 348:08
2012 1 333:29
2013 0 281:38
2014 11 156:47
2015 2 117:20
2016 0 142:02
2017 4 179:22
2018 0 222:16
2019 0 199:24
 
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