Phenology

Country
Migration site
Species
Period
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Year Migration site First Migration site Last
2021
VRS Castricum 1 January     
VRS Castricum 13 May
2020
VRS Castricum 7 January     
VRS Castricum 31 December
2019
VRS Castricum 3 January     
VRS Castricum 30 December
2018
VRS Castricum 2 January     
VRS Castricum 24 December
2017
VRS Castricum 2 January     
VRS Castricum 29 December
2016
VRS Castricum 18 January     
VRS Castricum 16 December
2015
VRS Castricum 4 January     
VRS Castricum 14 December
2014
VRS Castricum 5 January     
VRS Castricum 31 December
2013
VRS Castricum 2 January     
VRS Castricum 1 December
2012
VRS Castricum 2 January     
VRS Castricum 15 December
2011
VRS Castricum 2 January     
VRS Castricum 19 December
2010
VRS Castricum 6 January     
VRS Castricum 27 December
2009
VRS Castricum 2 January     
VRS Castricum 19 December
2008
VRS Castricum 10 February     
VRS Castricum 30 December
2007
VRS Castricum 6 January     
VRS Castricum 31 December
2006
VRS Castricum 1 January     
VRS Castricum 27 December
2005
VRS Castricum 16 January     
VRS Castricum 29 December
2004
VRS Castricum 1 January     
VRS Castricum 19 December
2003
VRS Castricum 7 January     
VRS Castricum 10 December
2002
VRS Castricum 1 January     
VRS Castricum 14 December
2001
VRS Castricum 21 January     
VRS Castricum 23 December
2000
VRS Castricum 9 January     
VRS Castricum 31 December
1999
VRS Castricum 31 January     
VRS Castricum 28 December
1998
VRS Castricum 29 January     
VRS Castricum 26 November
1997
VRS Castricum 5 January     
VRS Castricum 13 December
1996
VRS Castricum 14 January     
VRS Castricum 9 December
1995
VRS Castricum 25 February     
VRS Castricum 26 December
1994
VRS Castricum 6 February     
VRS Castricum 15 December
1993
VRS Castricum 7 February     
VRS Castricum 19 November
1992
VRS Castricum 8 February     
VRS Castricum 6 December
1991
VRS Castricum 6 March     
VRS Castricum 9 December
1990
VRS Castricum 2 January     
VRS Castricum 25 November
1989
VRS Castricum 18 January     
VRS Castricum 27 December
1988
VRS Castricum 19 July     
VRS Castricum 31 December
1987
VRS Castricum 9 January     
VRS Castricum 18 November
1986
VRS Castricum 1 August     
VRS Castricum 20 December
1985
VRS Castricum 1 August     
VRS Castricum 17 November
1984
VRS Castricum 1 August     
VRS Castricum 19 November
1983
VRS Castricum 1 August     
VRS Castricum 9 November
1982
VRS Castricum 28 March     
VRS Castricum 29 December
1981
VRS Castricum 5 April     
VRS Castricum 16 December
1980
VRS Castricum 31 July     
VRS Castricum 10 November
1979
VRS Castricum 1 August     
VRS Castricum 20 November
1978
VRS Castricum 1 August     
VRS Castricum 4 November
1977
VRS Castricum 3 August     
VRS Castricum 17 December
1976
VRS Castricum 17 August     
VRS Castricum 7 November
1975
VRS Castricum 7 August     
VRS Castricum 10 December
1974
VRS Castricum 19 August     
VRS Castricum 7 November
1973
VRS Castricum 3 August     
VRS Castricum 5 December
1972
VRS Castricum 23 September     
VRS Castricum 17 December
1971
VRS Castricum 6 September     
VRS Castricum 9 November
1970
VRS Castricum 5 September     
VRS Castricum 10 November
1969
VRS Castricum 25 September     
VRS Castricum 21 November
1968
VRS Castricum 24 September     
VRS Castricum 1 November
1967
VRS Castricum 4 January     
VRS Castricum 17 November
1966
VRS Castricum 28 September     
VRS Castricum 29 October
1965
VRS Castricum 3 October     
VRS Castricum 5 November
1964
VRS Castricum 9 October     
VRS Castricum 31 December
1963
VRS Castricum 21 October     
VRS Castricum 21 October
1962
VRS Castricum 24 September     
VRS Castricum 27 October
1961
VRS Castricum 10 July     
VRS Castricum 15 October
1960
VRS Castricum 15 September     
VRS Castricum 15 September
 
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