Graph

Country
Migration site
Species
Period
Sex
Age
Plumage
Present
Favourites

Year Totals Observation hours
2006 24 61:32
2007 38 211:28
2008 120 460:04
2009 86 365:00
2010 106 637:04
2011 126 348:08
2012 119 333:29
2013 208 281:38
2014 142 156:47
2015 17 117:20
2016 12 142:02
2017 36 179:22
2018 56 222:16
2019 0 98:41
 
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