Graph

Country
Migration site
Species
Period    
Sex
Age
Plumage
Present
Favourites

Year Totals Observation hours
1997 5 39:30
1999 0 10:00
2001 127 594:30
2002 0 0:00
2005 25 77:15
2006 36 32:05
2007 61 88:45
2008 80 100:00
2009 24 52:20
2010 54 48:05
2011 109 88:24
2012 8 36:20
2013 74 37:30
2014 17 30:40
2015 40 44:40
2016 96 171:15
2017 147 179:29
2018 298 380:50
2019 396 344:15
2020 70 213:31
 
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