Graph

Country
Migration site
Species
Period    
Sex
Age
Plumage
Present
Favourites

Year Totals Observation hours
1986 0 0:00
2000 0 1031:40
2001 0 1273:17
2002 0 1125:31
2003 1 1253:15
2004 0 1065:05
2005 0 1106:54
2006 0 964:46
2007 0 1081:59
2008 0 1099:59
2009 0 1282:49
2010 4 1288:05
2011 0 1234:15
2012 6 1364:55
2013 0 1352:29
2014 0 1299:50
2015 0 1223:30
2016 13 1409:54
2017 0 524:40
2018 0 1539:51
2019 0 1131:19
2020 0 996:10
 
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