Graph

Country
Migration site
Species
Period
Sex
Age
Plumage
Present
Favourites

Year Totals Observation hours
2006 0 61:32
2007 0 211:28
2008 10 460:04
2009 3 365:00
2010 38 637:04
2011 0 348:08
2012 2 333:29
2013 7 281:38
2014 0 156:47
2015 0 117:20
2016 0 142:02
2017 0 179:22
2018 2 222:16
2019 0 98:41
 
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