Graph

Country
Migration site
Species
Period    
Sex
Age
Plumage
Present
Favourites

Year Totals Observation hours
2006 0 61:32
2007 211 211:28
2008 285 460:04
2009 196 365:00
2010 156 637:04
2011 182 348:08
2012 565 333:29
2013 52 281:38
2014 14 156:47
2015 368 117:20
2016 114 142:02
2017 1151 179:22
2018 26 222:16
2019 18 98:41
 
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