Phenology
| Year | Migration site | First | Migration site | Last | |||||
|---|---|---|---|---|---|---|---|---|---|
| 2020 | Cap Gris-Nez | 8 august | Cap Gris-Nez | 8 august | |||||
| 2019 | Cap Gris-Nez | 10 april | Cap Gris-Nez | 13 april | |||||
| 2018 | Cap Gris-Nez | 28 october | Cap Gris-Nez | 28 october | |||||
| 2017 | Cap Gris-Nez | 27 march | Cap Gris-Nez | 11 november | |||||
| 2015 | Cap Gris-Nez | 15 august | Cap Gris-Nez | 15 august | |||||
| 2013 | Cap Gris-Nez | 7 april | Cap Gris-Nez | 27 august | |||||
| 2012 | Cap Gris-Nez | 31 march | Cap Gris-Nez | 6 april | |||||
| 2011 | Cap Gris-Nez | 28 february | Cap Gris-Nez | 26 november | |||||
| 2010 | Cap Gris-Nez | 19 april | Cap Gris-Nez | 4 november | |||||
| 2009 | Cap Gris-Nez | 17 march | Cap Gris-Nez | 6 november | |||||
| 2008 | Cap Gris-Nez | 23 march | Cap Gris-Nez | 15 november | |||||
| 2007 | Cap Gris-Nez | 6 april | Cap Gris-Nez | 7 november | |||||
| 2006 | Cap Gris-Nez | 3 april | Cap Gris-Nez | 5 september | |||||
| 2005 | Cap Gris-Nez | 31 march | Cap Gris-Nez | 9 november |
