Graph

Country
Migration site
Species
Period
Sex
Age
Plumage
Present
Favourites

Year Totals Observation hours
2006 0 61:32
2007 1 211:28
2008 3 460:04
2009 0 365:00
2010 2 637:04
2011 1 348:08
2012 0 333:29
2013 2 281:38
2014 2 156:47
2015 0 117:20
2016 1 142:02
2017 0 179:22
2018 3 222:16
2019 0 98:41
 
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