Graph

Country
Migration site
Species
Period
Sex
Age
Plumage
Present
Favourites

Year Totals Observation hours
2006 32 23:40
2007 86 71:05
2008 289 94:25
2009 182 91:45
2010 516 159:55
2011 323 208:42
2012 370 196:45
2013 334 239:26
2014 300 218:15
2015 210 145:35
2016 185 217:52
2017 486 191:09
2018 306 243:43
2019 43 140:00
 
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