Graph

Country
Migration site
Species
Period    
Sex
 Age
 Plumage
Present
Favourites

Year Totals Observation hours
1997 33 39:30
1999 507 19:00
2001 1932 594:30
2002 0 0:00
2005 112 77:15
2006 43 32:05
2007 45 88:45
2008 61 100:00
2009 50 52:20
2010 45 48:05
2011 68 88:24
2012 83 36:20
2013 464 37:30
2014 118 30:40
2015 73 44:40
2016 73 163:00
2017 600 179:29
2018 695 380:50
2019 654 344:15
2020 1326 447:51
 
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