Graph

Country
Migration site
Species
Period    
Sex
Age
Plumage
Present
Favourites

Year Totals Observation hours
1900 7 5:30
1980 0 2:00
1981 357 143:25
1982 224 100:04
1983 229 76:05
1984 635 157:55
1985 327 193:05
1986 850 180:40
1987 503 99:15
1988 996 216:00
1989 947 269:46
1990 1255 262:45
1991 1205 405:47
1992 1220 645:00
1993 2340 397:58
1994 1544 286:00
1995 755 224:45
1996 1498 328:00
1997 1139 356:45
1998 3724 339:30
1999 1652 267:15
2000 1469 261:30
2001 2389 525:35
2002 580 526:15
2003 1731 567:15
2004 2095 455:05
2005 1373 601:15
2006 1232 389:55
2007 783 432:55
2008 4073 525:55
2009 1688 399:05
2010 531 249:40
2011 1712 319:15
2012 1463 231:35
2013 415 270:55
2014 475 291:35
2015 312 177:30
2016 597 230:15
2017 577 250:05
2018 1603 318:16
2019 2118 584:19
2020 1929 587:17
2021 824 646:27
2022 946 477:05
 
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