Graph

Country
Migration site
Species
Period    
Sex
Age
Plumage
Present
Favourites

Year Totals Observation hours
1986 0 0:00
2000 375 1031:40
2001 331 1273:17
2002 491 1125:31
2003 519 1253:15
2004 548 1065:05
2005 402 1106:54
2006 305 964:46
2007 484 1081:59
2008 608 1099:59
2009 914 1282:49
2010 720 1288:05
2011 600 1234:15
2012 563 1364:55
2013 793 1352:29
2014 497 1299:50
2015 549 1223:30
2016 464 1409:54
2017 33 524:40
2018 484 1539:51
2019 420 1131:19
2020 340 987:40
 
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