Graph

Country
Migration site
Species
Period    
Sex
Age
Plumage
Present
Favourites

Year Totals Observation hours
2006 4 61:32
2007 22 211:28
2008 269 460:04
2009 673 365:00
2010 1111 637:04
2011 688 348:08
2012 501 333:29
2013 665 281:38
2014 173 156:47
2015 311 117:20
2016 224 142:02
2017 307 179:22
2018 229 222:16
2019 709 251:51
2020 745 326:27
2021 445 172:06
 
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