Graph

Country
Migration site
Species
Period    
Sex
 Age
 Plumage
Present
Favourites

Year Totals Observation hours
1997 2 39:30
1999 0 19:00
2001 1713 594:30
2002 0 0:00
2005 527 77:15
2006 302 32:05
2007 1180 88:45
2008 1797 100:00
2009 189 52:20
2010 331 48:05
2011 1243 88:24
2012 127 36:20
2013 999 37:30
2014 263 30:40
2015 113 44:40
2016 2319 171:15
2017 2141 179:29
2018 6051 380:50
2019 4732 344:15
2020 3110 358:46
 
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