Graph

Country
Migration site
Species
Period    
Sex
Age
Plumage
Present
Favourites

Year Totals Observation hours
1900 0 5:30
1980 0 2:00
1981 17 143:25
1982 42 100:04
1983 99 76:05
1984 113 157:55
1985 164 193:05
1986 236 180:40
1987 131 99:15
1988 5 216:00
1989 134 269:46
1990 161 262:45
1991 309 405:47
1992 317 645:00
1993 1150 397:58
1994 340 286:00
1995 130 224:45
1996 659 325:15
1997 534 356:45
1998 2667 339:30
1999 480 267:15
2000 181 261:30
2001 4176 524:35
2002 1693 526:15
2003 1406 567:15
2004 1642 455:05
2005 4933 601:15
2006 813 389:55
2007 887 432:55
2008 113 525:55
2009 216 399:05
2010 670 249:40
2011 287 319:15
2012 116 231:35
2013 885 270:55
2014 27 291:35
2015 20 177:30
2016 107 230:15
2017 26 250:05
2018 160 318:16
2019 263 584:19
2020 593 587:17
2021 410 563:27
 
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