Graph

Country
Migration site
Species
Period    
Sex
Age
Plumage
Present
Favourites

Year Totals Observation hours
2006 0 61:32
2007 57 211:28
2008 211 460:04
2009 107 365:00
2010 360 637:04
2011 108 348:08
2012 7 333:29
2013 14 281:38
2014 116 156:47
2015 201 117:20
2016 85 142:02
2017 9 179:22
2018 0 222:16
2019 92 246:33
 
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