Graph

Country
Migration site
Species
Period    
Sex
 Age
 Plumage
Present
Favourites
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Year Totals Observation hours
2006 0 61:32
2007 0 211:28
2008 1 460:04
2009 0 365:00
2010 0 637:04
2011 0 348:08
2012 0 333:29
2013 0 281:38
2014 0 156:47
2015 0 117:20
2016 0 142:02
2017 0 179:22
2018 0 222:16
2019 1 251:51
2020 0 326:27
2021 0 172:06
2022 0 72:35
 
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