Gaviotas fieles a sus lugares de invernada. Parte I/Gulls faithful to his wintering areas. Part I
Thousands of Gulls
winter in Madrid, the observation of banded birds lets us know that some
individuals are very loyal to their wintering areas. In these posts I show some
banded birds that we saw during different years in the same place. Some birds come
to Madrid the same month, the same day and 4-hour time difference from the
previous year, as was the case of green MAFA, ringed by Kees Camphuysen on the
island of Texel, Holland and carrying a GPS, this gull were first seen in
October 2007 in Colmenar Viejo, Madrid and later in October 2008 in the same
location, thanks to GPS data we know that in 2008 arrived to Madrid 4 hours later
than 2007.
Rojo 13. Anillado como pollo en Moerdijk
(Tetra Pak), Holanda, por Roland-Jan
Buijs
21-9-2008. Primer invierno/First winter
23-10-2009. Segundo invierno/Second winter
3-10-2010 Tercer invierno/Thitd winter. Se vio por primera vez el 6-9-2010/First seen on 6-9-2010
23-10-2011 Cuarto invierno/adulto. Fourth winter/adult.
Gaviota Sombría con GPS y con anilla de PVC verde MAFA.
Lesser Black-backed Gull carring a GPS and banded with green MAFA.
En ambas fotos se le puede observar la antena del GPS.
In both pictures we can see the GPS antenna
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