Graph

Country
Migration site
Species
Period    
Sex
Age
Plumage
Present
Favourites

Year Totals Observation hours
1900 0 5:30
1980 0 2:00
1981 27 143:25
1982 140 100:04
1983 20 76:05
1984 25 157:55
1985 24 193:05
1986 144 180:40
1987 11 99:15
1988 36 216:00
1989 61 269:46
1990 205 262:45
1991 526 405:47
1992 169 645:00
1993 184 397:58
1994 45 286:00
1995 21 224:45
1996 345 325:15
1997 90 356:45
1998 143 339:30
1999 173 267:15
2000 42 261:30
2001 662 524:35
2002 327 526:15
2003 427 567:15
2004 209 455:05
2005 329 601:15
2006 124 389:55
2007 698 432:55
2008 314 525:55
2009 467 399:05
2010 76 249:40
2011 708 319:15
2012 394 231:35
2013 544 270:55
2014 163 291:35
2015 35 177:30
2016 209 230:15
2017 231 250:05
2018 221 318:16
2019 412 584:19
2020 704 587:17
2021 174 563:27
 
Partners