Graph

Country
Migration site
Species
Period    
Sex
Age
Plumage
Present
Favourites

Year Totals Observation hours
1900 0 5:30
1980 0 2:00
1981 0 143:25
1982 0 100:04
1983 0 76:05
1984 1 157:55
1985 1 193:05
1986 0 180:40
1987 0 99:15
1988 2 216:00
1989 0 269:46
1990 2 262:45
1991 94 405:47
1992 18 645:00
1993 8 397:58
1994 3 286:00
1995 6 224:45
1996 299 328:00
1997 20 356:45
1998 19 339:30
1999 114 267:15
2000 27 261:30
2001 246 525:35
2002 417 526:15
2003 787 567:15
2004 574 455:05
2005 1054 601:15
2006 1979 389:55
2007 451 432:55
2008 481 525:55
2009 428 399:05
2010 1324 249:40
2011 1172 319:15
2012 380 231:35
2013 716 270:55
2014 856 291:35
2015 240 177:30
2016 1564 230:15
2017 470 250:05
2018 1203 318:16
2019 769 584:19
2020 2435 587:17
2021 1986 646:27
2022 861 488:40
 
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