Graph

Country
Migration site
Species
Period    
Sex
Age
Plumage
Present
Favourites

Year Totals Observation hours
1900 5 5:30
1980 1 2:00
1981 484 143:25
1982 447 100:04
1983 0 76:05
1984 1 157:55
1985 0 193:05
1986 40 180:40
1987 18 99:15
1988 377 216:00
1989 150 269:46
1990 139 262:45
1991 104 405:47
1992 246 645:00
1993 1611 397:58
1994 859 286:00
1995 947 224:45
1996 1671 325:15
1997 1491 356:45
1998 1625 339:30
1999 1127 267:15
2000 495 261:30
2001 1386 524:35
2002 778 526:15
2003 729 567:15
2004 342 455:05
2005 722 601:15
2006 431 389:55
2007 1380 432:55
2008 262 525:55
2009 782 399:05
2010 581 249:40
2011 1127 319:15
2012 470 231:35
2013 1237 270:55
2014 1189 291:35
2015 1522 177:30
2016 922 230:15
2017 1077 250:05
2018 413 318:16
2019 1468 584:19
2020 2089 587:17
2021 719 539:42
 
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