Graph

Country
Migration site
Species
Period    
Sex
 Age
 Plumage
Present
Favourites

Year Totals Observation hours
1997 4 39:30
1999 70 19:00
2001 5749 594:30
2002 0 0:00
2005 2029 77:15
2006 147 32:05
2007 2468 88:45
2008 2262 100:00
2009 1471 52:20
2010 221 48:05
2011 1906 88:24
2012 0 36:20
2013 526 37:30
2014 630 30:40
2015 1193 44:40
2016 2372 163:00
2017 5122 179:29
2018 8779 380:50
2019 7218 344:15
2020 21895 447:51
2021 43145 462:39
 
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