Phenology

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Migration site
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Period
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Year Migration site First Migration site Last
2020
VRS Castricum 16 March     
VRS Castricum 1 September
2019
VRS Castricum 20 March     
VRS Castricum 21 September
2018
VRS Castricum 14 March     
VRS Castricum 4 August
2017
VRS Castricum 11 March     
VRS Castricum 8 October
2016
VRS Castricum 26 March     
VRS Castricum 11 October
2015
VRS Castricum 22 March     
VRS Castricum 23 September
2014
VRS Castricum 28 March     
VRS Castricum 1 October
2013
VRS Castricum 21 March     
VRS Castricum 24 August
2012
VRS Castricum 19 March     
VRS Castricum 23 September
2011
VRS Castricum 15 March     
VRS Castricum 1 October
2010
VRS Castricum 21 March     
VRS Castricum 11 October
2009
VRS Castricum 13 March     
VRS Castricum 14 October
2008
VRS Castricum 4 April     
VRS Castricum 25 September
2007
VRS Castricum 25 March     
VRS Castricum 10 October
2006
VRS Castricum 5 April     
VRS Castricum 17 October
2005
VRS Castricum 20 March     
VRS Castricum 11 October
2004
VRS Castricum 18 July     
VRS Castricum 4 September
2003
VRS Castricum 29 March     
VRS Castricum 12 October
2002
VRS Castricum 16 March     
VRS Castricum 12 October
2001
VRS Castricum 30 March     
VRS Castricum 31 December
2000
VRS Castricum 11 April     
VRS Castricum 29 September
1999
VRS Castricum 16 March     
VRS Castricum 7 July
1998
VRS Castricum 29 March     
VRS Castricum 22 July
1997
VRS Castricum 30 March     
VRS Castricum 19 October
1996
VRS Castricum 3 April     
VRS Castricum 11 October
1995
VRS Castricum 13 March     
VRS Castricum 24 October
1994
VRS Castricum 20 March     
VRS Castricum 22 October
1993
VRS Castricum 20 May     
VRS Castricum 28 October
1992
VRS Castricum 5 March     
VRS Castricum 10 October
1991
VRS Castricum 7 March     
VRS Castricum 15 October
1990
VRS Castricum 13 March     
VRS Castricum 20 October
1989
VRS Castricum 2 March     
VRS Castricum 19 October
1988
VRS Castricum 19 July     
VRS Castricum 22 October
1987
VRS Castricum 24 March     
VRS Castricum 23 October
1986
VRS Castricum 10 March     
VRS Castricum 12 November
1985
VRS Castricum 23 August     
VRS Castricum 22 October
1984
VRS Castricum 7 April     
VRS Castricum 11 November
1983
VRS Castricum 3 August     
VRS Castricum 4 October
1982
VRS Castricum 3 April     
VRS Castricum 18 October
1981
VRS Castricum 18 April     
VRS Castricum 1 October
1980
VRS Castricum 17 August     
VRS Castricum 15 October
1979
VRS Castricum 9 September     
VRS Castricum 9 October
1978
VRS Castricum 6 September     
VRS Castricum 18 October
1977
VRS Castricum 5 October     
VRS Castricum 15 October
1976
VRS Castricum 20 September     
VRS Castricum 14 October
1975
VRS Castricum 30 September     
VRS Castricum 30 September
1974
VRS Castricum 23 October     
VRS Castricum 23 October
1973
VRS Castricum 25 September     
VRS Castricum 25 September
1972
VRS Castricum 27 September     
VRS Castricum 12 October
1971
VRS Castricum 7 September     
VRS Castricum 27 October
1970
VRS Castricum 21 September     
VRS Castricum 21 September
1969
VRS Castricum 8 October     
VRS Castricum 8 October
1967
VRS Castricum 12 October     
VRS Castricum 13 October
1966
VRS Castricum 6 October     
VRS Castricum 6 October
1964
VRS Castricum 8 August     
VRS Castricum 8 August
1962
VRS Castricum 25 September     
VRS Castricum 1 October
 
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