Graph

Country
Migration site
Species
Period    
Sex
Age
Plumage
Present
Favourites

Year Totals Observation hours
2006 38 61:32
2007 454 211:28
2008 6321 460:04
2009 5537 365:00
2010 5904 637:04
2011 4083 348:08
2012 6495 333:29
2013 2550 281:38
2014 3138 156:47
2015 787 117:20
2016 2148 142:02
2017 1250 179:22
2018 1881 222:16
2019 972 98:41
 
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