Graph

Country
Migration site
Species
Period    
Sex
 Age
 Plumage
Present
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Year Totals Observation hours
1997 9 39:30
1999 3 19:00
2001 9423 594:30
2002 0 0:00
2005 586 77:15
2006 206 32:05
2007 317 88:45
2008 337 100:00
2009 155 52:20
2010 312 48:05
2011 380 88:24
2012 40 36:20
2013 204 37:30
2014 215 30:40
2015 251 44:40
2016 998 163:00
2017 1624 179:29
2018 2325 380:50
2019 8668 344:15
2020 5319 447:51
2021 7863 462:39
2022 5114 482:00
 
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