Graph

Country
Migration site
Species
Period    
Sex
Age
Plumage
Present
Favourites

Year Totals Observation hours
1900 0 5:30
1980 0 2:00
1981 265 143:25
1982 66 100:04
1983 0 76:05
1984 6 157:55
1985 16 193:05
1986 140 180:40
1987 91 99:15
1988 1329 216:00
1989 2531 269:46
1990 190 262:45
1991 313 405:47
1992 28 645:00
1993 114 397:58
1994 69 286:00
1995 2135 224:45
1996 2422 325:15
1997 99 356:45
1998 5 339:30
1999 5 267:15
2000 0 261:30
2001 0 524:35
2002 60 526:15
2003 10 567:15
2004 2 455:05
2005 5698 601:15
2006 20 389:55
2007 614 432:55
2008 1067 525:55
2009 591 399:05
2010 1640 249:40
2011 82 319:15
2012 219 231:35
2013 7 270:55
2014 810 291:35
2015 86 177:30
2016 153 230:15
2017 675 250:05
2018 613 318:16
2019 427 584:19
2020 2543 587:17
2021 100 644:27
 
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