Graph

Country
Migration site
Species
Period    
Sex
 Age
 Plumage
Present
Favourites

Year Totals Observation hours
1997 0 39:30
1999 237 19:00
2001 241 594:30
2002 0 0:00
2005 362 77:15
2006 19 32:05
2007 492 88:45
2008 239 100:00
2009 243 52:20
2010 241 48:05
2011 279 88:24
2012 4 36:20
2013 133 37:30
2014 0 30:40
2015 2307 44:40
2016 1220 163:00
2017 427 179:29
2018 2403 380:50
2019 2130 344:15
2020 7106 447:51
2021 6 219:54
 
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