Phenology

Country
Migration site
Species
Period
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Year Migration site First Migration site Last
2021
VRS Castricum 10 April     
VRS Castricum 1 May
2020
VRS Castricum 25 March     
VRS Castricum 12 October
2019
VRS Castricum 17 April     
VRS Castricum 19 October
2018
VRS Castricum 5 May     
VRS Castricum 29 September
2017
VRS Castricum 31 March     
VRS Castricum 16 August
2016
VRS Castricum 10 April     
VRS Castricum 12 October
2015
VRS Castricum 27 April     
VRS Castricum 26 September
2014
VRS Castricum 3 April     
VRS Castricum 17 October
2013
VRS Castricum 17 June     
VRS Castricum 22 August
2012
VRS Castricum 26 May     
VRS Castricum 3 September
2011
VRS Castricum 30 March     
VRS Castricum 15 October
2010
VRS Castricum 19 January     
VRS Castricum 23 September
2009
VRS Castricum 20 April     
VRS Castricum 3 August
2008
VRS Castricum 25 May     
VRS Castricum 28 September
2007
VRS Castricum 18 April     
VRS Castricum 25 August
2006
VRS Castricum 30 April     
VRS Castricum 3 August
2005
VRS Castricum 4 April     
VRS Castricum 3 August
2004
VRS Castricum 16 April     
VRS Castricum 1 November
2003
VRS Castricum 23 April     
VRS Castricum 5 August
2002
VRS Castricum 7 April     
VRS Castricum 31 October
2001
VRS Castricum 31 March     
VRS Castricum 25 September
2000
VRS Castricum 1 April     
VRS Castricum 7 December
1999
VRS Castricum 11 April     
VRS Castricum 15 November
1998
VRS Castricum 21 April     
VRS Castricum 16 August
1997
VRS Castricum 17 April     
VRS Castricum 27 October
1996
VRS Castricum 25 April     
VRS Castricum 5 December
1995
VRS Castricum 11 April     
VRS Castricum 28 November
1994
VRS Castricum 27 March     
VRS Castricum 2 December
1993
VRS Castricum 24 April     
VRS Castricum 16 November
1992
VRS Castricum 30 April     
VRS Castricum 21 November
1991
VRS Castricum 18 May     
VRS Castricum 24 November
1990
VRS Castricum 10 April     
VRS Castricum 24 November
1989
VRS Castricum 9 April     
VRS Castricum 4 November
1988
VRS Castricum 19 July     
VRS Castricum 22 October
1987
VRS Castricum 19 April     
VRS Castricum 14 November
1986
VRS Castricum 3 August     
VRS Castricum 27 October
1985
VRS Castricum 17 August     
VRS Castricum 29 October
1984
VRS Castricum 4 August     
VRS Castricum 19 November
1983
VRS Castricum 3 August     
VRS Castricum 13 November
1982
VRS Castricum 5 April     
VRS Castricum 5 November
1981
VRS Castricum 6 April     
VRS Castricum 30 October
1980
VRS Castricum 31 July     
VRS Castricum 7 December
1979
VRS Castricum 4 August     
VRS Castricum 19 December
1978
VRS Castricum 1 August     
VRS Castricum 15 November
1977
VRS Castricum 28 April     
VRS Castricum 25 October
1976
VRS Castricum 23 September     
VRS Castricum 30 December
1975
VRS Castricum 18 August     
VRS Castricum 9 December
1974
VRS Castricum 21 August     
VRS Castricum 30 October
1973
VRS Castricum 19 August     
VRS Castricum 9 December
1972
VRS Castricum 2 January     
VRS Castricum 20 December
1971
VRS Castricum 5 September     
VRS Castricum 29 December
1970
VRS Castricum 20 September     
VRS Castricum 5 December
1969
VRS Castricum 24 September     
VRS Castricum 6 December
1968
VRS Castricum 26 September     
VRS Castricum 25 October
1967
VRS Castricum 23 September     
VRS Castricum 16 November
1966
VRS Castricum 25 September     
VRS Castricum 8 November
1965
VRS Castricum 25 September     
VRS Castricum 13 November
1964
VRS Castricum 8 August     
VRS Castricum 20 November
1963
VRS Castricum 28 September     
VRS Castricum 11 November
1962
VRS Castricum 15 September     
VRS Castricum 23 November
1961
VRS Castricum 24 September     
VRS Castricum 22 November
1960
VRS Castricum 20 September     
VRS Castricum 23 September
 
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