Graph

Country
Migration site
Species
Period    
Sex
 Age
 Plumage
Present
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Year Totals Observation hours
2004 108 114:30
2007 314 302:40
2008 356 348:00
2009 224 74:00
2010 22 13:30
2018 286 246:25
2019 313 290:45
2020 303 286:25
2021 155 236:15
2022 165 108:45
 
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