Graph

Country
Migration site
Species
Period    
Sex
Age
Plumage
Present
Favourites

Year Totals Observation hours
2006 2 61:32
2007 25 211:28
2008 53 460:04
2009 249 365:00
2010 170 637:04
2011 119 348:08
2012 183 333:29
2013 113 281:38
2014 68 156:47
2015 29 117:20
2016 0 142:02
2017 26 179:22
2018 16 222:16
2019 2 152:44
 
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