Phenology
| Year | Migration site | First | Migration site | Last | |||||
|---|---|---|---|---|---|---|---|---|---|
| 2020 | Cap Gris-Nez | 19 february | Cap Gris-Nez | 29 october | |||||
| 2019 | Cap Gris-Nez | 23 february | Cap Gris-Nez | 27 december | |||||
| 2018 | Cap Gris-Nez | 9 march | Cap Gris-Nez | 8 december | |||||
| 2017 | Cap Gris-Nez | 28 january | Cap Gris-Nez | 3 december | |||||
| 2016 | Cap Gris-Nez | 13 march | Cap Gris-Nez | 27 november | |||||
| 2015 | Cap Gris-Nez | 17 february | Cap Gris-Nez | 27 november | |||||
| 2014 | Cap Gris-Nez | 9 march | Cap Gris-Nez | 7 december | |||||
| 2013 | Cap Gris-Nez | 20 february | Cap Gris-Nez | 29 november | |||||
| 2012 | Cap Gris-Nez | 11 march | Cap Gris-Nez | 29 december | |||||
| 2011 | Cap Gris-Nez | 9 february | Cap Gris-Nez | 19 december | |||||
| 2010 | Cap Gris-Nez | 2 january | Cap Gris-Nez | 28 november | |||||
| 2009 | Cap Gris-Nez | 15 february | Cap Gris-Nez | 2 december | |||||
| 2008 | Cap Gris-Nez | 24 january | Cap Gris-Nez | 23 november | |||||
| 2007 | Cap Gris-Nez | 2 january | Cap Gris-Nez | 11 december | |||||
| 2006 | Cap Gris-Nez | 11 january | Cap Gris-Nez | 17 december | |||||
| 2005 | Cap Gris-Nez | 11 february | Cap Gris-Nez | 17 december | |||||
| 1987 | Cap Gris-Nez | 17 october | Cap Gris-Nez | 23 october | |||||
| 1986 | Cap Gris-Nez | 18 october | Cap Gris-Nez | 18 october | |||||
| 1978 | Cap Gris-Nez | 1 october | Cap Gris-Nez | 1 october | |||||
| 1977 | Cap Gris-Nez | 1 october | Cap Gris-Nez | 2 october |
