Graph

Country
Migration site
Species
Period    
Sex
Age
Plumage
Present
Favourites

Year Totals Observation hours
1900 24 5:30
1980 0 2:00
1981 307 143:25
1982 283 100:04
1983 73 76:05
1984 621 157:55
1985 293 193:05
1986 464 180:40
1987 201 99:15
1988 831 216:00
1989 771 269:46
1990 918 262:45
1991 1005 405:47
1992 770 645:00
1993 858 397:58
1994 504 286:00
1995 494 224:45
1996 1182 325:15
1997 750 356:45
1998 990 339:30
1999 469 267:15
2000 489 261:30
2001 1839 524:35
2002 1292 526:15
2003 1449 567:15
2004 967 455:05
2005 1414 601:15
2006 1130 389:55
2007 1206 432:55
2008 1111 525:55
2009 1054 399:05
2010 714 249:40
2011 1118 319:15
2012 910 231:35
2013 1073 270:55
2014 1071 291:35
2015 422 177:30
2016 724 230:15
2017 1176 250:05
2018 1497 318:16
2019 1618 584:19
2020 1839 587:17
2021 1390 644:27
 
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