Graph

Country
Migration site
Species
Period    
Sex
Age
Plumage
Present
Favourites

Year Totals Observation hours
1900 0 5:30
1980 3 2:00
1981 23 143:25
1982 5 100:04
1983 0 76:05
1984 5 157:55
1985 0 193:05
1986 12 180:40
1987 13 99:15
1988 155 216:00
1989 529 269:46
1990 1447 262:45
1991 774 405:47
1992 574 645:00
1993 978 397:58
1994 1798 286:00
1995 2240 224:45
1996 1710 325:15
1997 3604 356:45
1998 3110 339:30
1999 100 267:15
2000 27 261:30
2001 114 524:35
2002 449 526:15
2003 12 567:15
2004 4 455:05
2005 898 601:15
2006 19 389:55
2007 185 432:55
2008 175 525:55
2009 1819 399:05
2010 444 249:40
2011 107 319:15
2012 5 231:35
2013 15 270:55
2014 275 291:35
2015 338 177:30
2016 427 230:15
2017 203 250:05
2018 415 318:16
2019 1106 584:19
2020 2767 587:17
2021 215 524:47
 
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