Graph

Country
Migration site
Species
Period    
Sex
Age
Plumage
Present
Favourites

Year Totals Observation hours
1900 144 5:30
1980 0 2:00
1981 24066 143:25
1982 1510 100:04
1983 5389 76:05
1984 5713 157:55
1985 3060 193:05
1986 6413 180:40
1987 3839 99:15
1988 14494 216:00
1989 8037 269:46
1990 6497 262:45
1991 6385 405:47
1992 39657 645:00
1993 37515 397:58
1994 28327 286:00
1995 10221 224:45
1996 10408 328:00
1997 17570 356:45
1998 14653 339:30
1999 21183 267:15
2000 17098 261:30
2001 35722 525:35
2002 20781 526:15
2003 27522 567:15
2004 15046 455:05
2005 35530 601:15
2006 23844 389:55
2007 19252 432:55
2008 64907 525:55
2009 19158 399:05
2010 7051 249:40
2011 27807 319:15
2012 64569 231:35
2013 3360 270:55
2014 11983 291:35
2015 11021 177:30
2016 30612 230:15
2017 40780 250:05
2018 24578 318:16
2019 54651 584:19
2020 28986 587:17
2021 15448 646:27
2022 8691 488:40
 
Partners