Graph

Country
Migration site
Species
Period
Sex
 Age
 Plumage
Present
Favourites

Year Totals Observation hours
2006 284 23:40
2007 1960 71:05
2008 4001 94:25
2009 2359 91:45
2010 3340 159:55
2011 3332 208:42
2012 7460 196:45
2013 4536 239:26
2014 4604 218:15
2015 1899 145:35
2016 2127 217:52
2017 6643 191:09
2018 4750 243:43
2019 4515 140:00
 
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