Graph

Country
Migration site
Species
Period    
Sex
Age
Plumage
Present
Favourites

Year Totals Observation hours
2006 3 61:32
2007 5 211:28
2008 41 460:04
2009 52 365:00
2010 47 637:04
2011 28 348:08
2012 17 333:29
2013 91 281:38
2014 41 156:47
2015 4 117:20
2016 44 142:02
2017 2 179:22
2018 11 222:16
2019 25 251:51
2020 3 326:27
2021 16 172:06
 
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