Graph

Country
Migration site
Species
Period    
Sex
Age
Plumage
Present
Favourites

Year Totals Observation hours
2006 1 61:32
2007 6 211:28
2008 248 460:04
2009 1416 365:00
2010 3278 637:04
2011 1140 348:08
2012 918 333:29
2013 712 281:38
2014 127 156:47
2015 114 117:20
2016 117 142:02
2017 108 179:22
2018 224 222:16
2019 184 106:24
 
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