Graph

Country
Migration site
Species
Period    
Sex
Age
Plumage
Present
Favourites

Year Totals Observation hours
1986 0 0:00
2000 16 1031:40
2001 0 1273:17
2002 1 1125:31
2003 1 1253:15
2004 10 1065:05
2005 1 1106:54
2006 1 964:46
2007 1 1081:59
2008 1 1099:59
2009 9 1282:49
2010 4 1288:05
2011 10 1234:15
2012 12 1364:55
2013 11 1352:29
2014 1 1299:50
2015 40 1223:30
2016 52 1409:54
2017 3 524:40
2018 17 1539:51
2019 26 1131:19
2020 29 1159:05
 
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