Graph

Country
Migration site
Species
Period    
Sex
 Age
 Plumage
Present
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Year Totals Observation hours
1997 0 39:30
1999 13 19:00
2001 42 594:30
2002 0 0:00
2005 19 77:15
2006 1 32:05
2007 9 88:45
2008 8 100:00
2009 5 52:20
2010 2 48:05
2011 8 88:24
2012 2 36:20
2013 12 37:30
2014 2 30:40
2015 6 44:40
2016 9 163:00
2017 88 179:29
2018 71 380:50
2019 349 344:15
2020 197 447:51
2021 225 462:39
2022 219 482:00
 
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