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 9 April     
VRS Castricum 5 October
2019
VRS Castricum 4 April     
VRS Castricum 2 October
2018
VRS Castricum 8 April     
VRS Castricum 26 September
2017
VRS Castricum 23 April     
VRS Castricum 15 October
2016
VRS Castricum 5 April     
VRS Castricum 27 September
2015
VRS Castricum 14 April     
VRS Castricum 3 October
2014
VRS Castricum 19 April     
VRS Castricum 26 September
2013
VRS Castricum 16 April     
VRS Castricum 5 October
2012
VRS Castricum 21 April     
VRS Castricum 20 October
2011
VRS Castricum 8 April     
VRS Castricum 9 October
2010
VRS Castricum 6 April     
VRS Castricum 7 October
2009
VRS Castricum 11 April     
VRS Castricum 30 September
2008
VRS Castricum 23 April     
VRS Castricum 6 October
2007
VRS Castricum 13 April     
VRS Castricum 3 October
2006
VRS Castricum 17 April     
VRS Castricum 9 October
2005
VRS Castricum 3 April     
VRS Castricum 14 October
2004
VRS Castricum 17 April     
VRS Castricum 5 October
2003
VRS Castricum 13 April     
VRS Castricum 2 October
2002
VRS Castricum 23 April     
VRS Castricum 24 September
2001
VRS Castricum 14 April     
VRS Castricum 28 September
2000
VRS Castricum 22 April     
VRS Castricum 25 September
1999
VRS Castricum 16 April     
VRS Castricum 22 September
1998
VRS Castricum 19 April     
VRS Castricum 16 October
1997
VRS Castricum 26 April     
VRS Castricum 23 September
1996
VRS Castricum 21 April     
VRS Castricum 28 September
1995
VRS Castricum 26 April     
VRS Castricum 22 September
1994
VRS Castricum 16 April     
VRS Castricum 9 October
1993
VRS Castricum 14 May     
VRS Castricum 24 September
1992
VRS Castricum 21 April     
VRS Castricum 9 September
1991
VRS Castricum 30 April     
VRS Castricum 13 September
1990
VRS Castricum 29 April     
VRS Castricum 11 September
1989
VRS Castricum 30 April     
VRS Castricum 21 September
1988
VRS Castricum 18 July     
VRS Castricum 16 September
1987
VRS Castricum 18 May     
VRS Castricum 22 September
1986
VRS Castricum 24 August     
VRS Castricum 24 August
1985
VRS Castricum 30 August     
VRS Castricum 30 August
1984
VRS Castricum 17 August     
VRS Castricum 29 September
1983
VRS Castricum 24 August     
VRS Castricum 24 August
1982
VRS Castricum 11 May     
VRS Castricum 12 May
1981
VRS Castricum 10 May     
VRS Castricum 17 September
1980
VRS Castricum 9 August     
VRS Castricum 29 August
1979
VRS Castricum 16 August     
VRS Castricum 16 August
1978
VRS Castricum 9 October     
VRS Castricum 9 October
1977
VRS Castricum 15 August     
VRS Castricum 30 August
1974
VRS Castricum 19 August     
VRS Castricum 19 August
1973
VRS Castricum 27 August     
VRS Castricum 27 August
 
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