Graph

Country
Migration site
Species
Period    
Sex
Age
Plumage
Present
Favourites

Year Totals Observation hours
1900 2 5:30
1980 58 2:00
1981 12252 143:25
1982 10570 100:04
1983 2587 76:05
1984 37330 157:55
1985 7656 193:05
1986 29300 180:40
1987 17357 99:15
1988 17933 216:00
1989 21975 269:46
1990 140004 262:45
1991 174090 405:47
1992 82793 645:00
1993 57920 397:58
1994 70521 286:00
1995 76637 224:45
1996 55501 328:00
1997 62484 356:45
1998 95548 339:30
1999 49674 267:15
2000 37015 261:30
2001 58332 525:35
2002 71579 526:15
2003 935357 567:15
2004 150798 455:05
2005 267043 601:15
2006 22747 389:55
2007 73419 432:55
2008 489540 525:55
2009 151239 399:05
2010 123781 249:40
2011 125767 319:15
2012 39158 231:35
2013 44025 270:55
2014 66364 291:35
2015 61207 177:30
2016 18222 230:15
2017 35370 250:05
2018 64356 318:16
2019 585063 584:19
2020 174733 587:17
2021 79255 646:27
2022 109663 477:05
 
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