Graph

Country
Migration site
Species
Period    
Sex
 Age
 Plumage
Present
Favourites

Year Totals Observation hours
2006 158 61:32
2007 920 211:28
2008 2326 460:04
2009 1342 365:00
2010 1862 637:04
2011 2855 348:08
2012 2205 333:29
2013 3695 281:38
2014 2051 156:47
2015 671 117:20
2016 1071 142:02
2017 1358 179:22
2018 2107 222:16
2019 1500 251:51
2020 1869 326:27
2021 630 172:06
 
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