Graph

Country
Migration site
Species
Period    
Sex
Age
Plumage
Present
Favourites

Year Totals Observation hours
1900 2 5:30
1980 0 2:00
1981 0 143:25
1982 0 100:04
1983 0 76:05
1984 1 157:55
1985 0 193:05
1986 1 180:40
1987 1 99:15
1988 2 216:00
1989 1 269:46
1990 8 262:45
1991 1 405:47
1992 2 645:00
1993 102 397:58
1994 6 286:00
1995 5 224:45
1996 3 325:15
1997 6 356:45
1998 3 339:30
1999 2 267:15
2000 1 261:30
2001 40 524:35
2002 4 526:15
2003 5 567:15
2004 19 455:05
2005 0 601:15
2006 6 389:55
2007 6 432:55
2008 18 525:55
2009 4 399:05
2010 2 249:40
2011 6 319:15
2012 1 231:35
2013 1 270:55
2014 0 291:35
2015 2 177:30
2016 7 230:15
2017 2 250:05
2018 6 318:16
2019 3 584:19
2020 5 587:17
2021 3 644:27
 
Partners