Graph

Country
Migration site
Species
Period    
Sex
Age
Plumage
Present
Favourites

Year Totals Observation hours
1900 0 5:30
1980 0 2:00
1981 3 143:25
1982 24 100:04
1983 84 76:05
1984 181 157:55
1985 15 193:05
1986 264 180:40
1987 13 99:15
1988 57 216:00
1989 64 269:46
1990 31 262:45
1991 319 405:47
1992 91 645:00
1993 328 397:58
1994 174 286:00
1995 155 224:45
1996 45 328:00
1997 67 356:45
1998 907 339:30
1999 141 267:15
2000 386 261:30
2001 60 525:35
2002 780 526:15
2003 1283 567:15
2004 205 455:05
2005 447 601:15
2006 788 389:55
2007 1612 432:55
2008 662 525:55
2009 1035 399:05
2010 444 249:40
2011 656 319:15
2012 171 231:35
2013 3629 270:55
2014 161 291:35
2015 21 177:30
2016 1626 230:15
2017 38 250:05
2018 93 318:16
2019 2221 584:19
2020 719 587:17
2021 6737 646:27
2022 1021 477:05
 
Partners