Graph

Country
Migration site
Species
Period    
Sex
Age
Plumage
Present
Favourites

Year Totals Observation hours
1997 0 39:30
1999 5 19:00
2001 546 594:30
2002 0 0:00
2005 902 77:15
2006 39 32:05
2007 262 88:45
2008 619 100:00
2009 8 52:20
2010 166 48:05
2011 77 88:24
2012 1 36:20
2013 221 37:30
2014 29 30:40
2015 909 44:40
2016 11 163:00
2017 1200 179:29
2018 3281 380:50
2019 166 344:15
2020 6543 447:51
2021 26155 462:39
 
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