Graph

Country
Migration site
Species
Period    
Sex
Age
Plumage
Present
Favourites

Year Totals Observation hours
2006 0 61:32
2007 0 211:28
2008 0 460:04
2009 0 365:00
2010 344 637:04
2011 0 348:08
2012 14 333:29
2013 217 281:38
2014 43 156:47
2015 3 117:20
2016 116 142:02
2017 15 179:22
2018 20 222:16
2019 50 251:51
2020 137 326:27
2021 20 117:29
 
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