Phenology

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Migration site
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Period
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Year Migration site First Migration site Last
2021
VRS Castricum 10 April     
VRS Castricum 7 October
2020
VRS Castricum 6 April     
VRS Castricum 1 October
2019
VRS Castricum 31 March     
VRS Castricum 22 October
2018
VRS Castricum 8 April     
VRS Castricum 28 October
2017
VRS Castricum 26 October     
VRS Castricum 26 October
2016
VRS Castricum 17 April     
VRS Castricum 11 October
2015
VRS Castricum 23 April     
VRS Castricum 11 October
2014
VRS Castricum 1 April     
VRS Castricum 30 October
2013
VRS Castricum 16 April     
VRS Castricum 12 October
2012
VRS Castricum 3 April     
VRS Castricum 22 October
2011
VRS Castricum 15 April     
VRS Castricum 13 October
2010
VRS Castricum 28 September     
VRS Castricum 29 September
2009
VRS Castricum 7 April     
VRS Castricum 7 April
2008
VRS Castricum 14 April     
VRS Castricum 28 October
2007
VRS Castricum 29 March     
VRS Castricum 10 October
2006
VRS Castricum 15 April     
VRS Castricum 25 October
2005
VRS Castricum 18 April     
VRS Castricum 30 April
2004
VRS Castricum 17 April     
VRS Castricum 16 October
2003
VRS Castricum 14 April     
VRS Castricum 28 September
2001
VRS Castricum 26 April     
VRS Castricum 24 September
2000
VRS Castricum 19 April     
VRS Castricum 19 April
1999
VRS Castricum 2 April     
VRS Castricum 30 April
1998
VRS Castricum 19 April     
VRS Castricum 24 October
1996
VRS Castricum 9 April     
VRS Castricum 9 April
1994
VRS Castricum 23 April     
VRS Castricum 16 October
1993
VRS Castricum 25 September     
VRS Castricum 15 October
1992
VRS Castricum 2 October     
VRS Castricum 2 October
1991
VRS Castricum 9 May     
VRS Castricum 9 May
1990
VRS Castricum 1 May     
VRS Castricum 1 May
1989
VRS Castricum 22 April     
VRS Castricum 22 April
1988
VRS Castricum 1 October     
VRS Castricum 26 October
1987
VRS Castricum 20 October     
VRS Castricum 20 October
1986
VRS Castricum 4 October     
VRS Castricum 4 October
1983
VRS Castricum 25 September     
VRS Castricum 25 September
1982
VRS Castricum 5 April     
VRS Castricum 30 September
1979
VRS Castricum 30 September     
VRS Castricum 30 September
1978
VRS Castricum 12 October     
VRS Castricum 13 October
1977
VRS Castricum 23 September     
VRS Castricum 7 October
1976
VRS Castricum 30 October     
VRS Castricum 30 October
1974
VRS Castricum 8 October     
VRS Castricum 8 October
1973
VRS Castricum 12 October     
VRS Castricum 12 October
1972
VRS Castricum 14 October     
VRS Castricum 24 November
1962
VRS Castricum 18 September     
VRS Castricum 18 September
 
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