Graph

Country
Migration site
Species
Period    
Sex
 Age
 Plumage
Present
Favourites

Year Totals Observation hours
1997 391 39:30
1999 58 19:00
2001 2478 594:30
2002 0 0:00
2005 148 77:15
2006 5 32:05
2007 41 88:45
2008 471 100:00
2009 18 52:20
2010 48 48:05
2011 179 88:24
2012 131 36:20
2013 130 37:30
2014 60 30:40
2015 144 44:40
2016 1402 163:00
2017 1092 179:29
2018 836 380:50
2019 1570 344:15
2020 1584 447:51
2021 1753 462:39
 
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