Phenology
| Year | Migration site | First | Migration site | Last | |||||
|---|---|---|---|---|---|---|---|---|---|
| 2020 | Cap Gris-Nez | 17 may | Cap Gris-Nez | 10 october | |||||
| 2019 | Cap Gris-Nez | 12 march | Cap Gris-Nez | 6 september | |||||
| 2018 | Cap Gris-Nez | 9 march | Cap Gris-Nez | 25 september | |||||
| 2017 | Cap Gris-Nez | 14 march | Cap Gris-Nez | 15 september | |||||
| 2016 | Cap Gris-Nez | 29 february | Cap Gris-Nez | 22 october | |||||
| 2015 | Cap Gris-Nez | 7 march | Cap Gris-Nez | 1 november | |||||
| 2014 | Cap Gris-Nez | 2 march | Cap Gris-Nez | 11 october | |||||
| 2013 | Cap Gris-Nez | 6 march | Cap Gris-Nez | 5 october | |||||
| 2012 | Cap Gris-Nez | 11 march | Cap Gris-Nez | 1 september | |||||
| 2011 | Cap Gris-Nez | 15 march | Cap Gris-Nez | 13 november | |||||
| 2010 | Cap Gris-Nez | 13 march | Cap Gris-Nez | 29 august | |||||
| 2009 | Cap Gris-Nez | 28 february | Cap Gris-Nez | 11 october | |||||
| 2008 | Cap Gris-Nez | 24 february | Cap Gris-Nez | 28 october | |||||
| 2007 | Cap Gris-Nez | 3 april | Cap Gris-Nez | 27 october | |||||
| 2006 | Cap Gris-Nez | 7 march | Cap Gris-Nez | 21 october | |||||
| 2005 | Cap Gris-Nez | 9 may | Cap Gris-Nez | 11 december |
