Graph

Country
Migration site
Species
Period    
Sex
Age
Plumage
Present
Favourites

Year Totals Observation hours
1900 1 5:30
1980 0 2:00
1981 1 143:25
1982 0 100:04
1983 0 76:05
1984 0 157:55
1985 2 193:05
1986 0 180:40
1987 0 99:15
1988 0 216:00
1989 2 269:46
1990 1 262:45
1991 52 405:47
1992 0 645:00
1993 0 397:58
1994 2 286:00
1995 2 224:45
1996 0 325:15
1997 5 356:45
1998 1 339:30
1999 2 267:15
2000 5 261:30
2001 2 524:35
2002 8 526:15
2003 1 567:15
2004 0 455:05
2005 16 601:15
2006 2 389:55
2007 6 432:55
2008 5 525:55
2009 11 399:05
2010 5 249:40
2011 1 319:15
2012 4 231:35
2013 6 270:55
2014 2 291:35
2015 2 177:30
2016 1 230:15
2017 4 250:05
2018 4 318:16
2019 1 584:19
2020 14 587:17
2021 75 644:27
 
Partners