21–30 of 63 posts
It's odd that you can see the borders between Belgium and France for various birds (like the swift and cuckoo), same for the border between Germany and Poland. I wonder why that is? There are no topological features defining these borders. Maybe the data is normalised in some way across countries?
Looks like birds really like Iberia to stay during cooler times, just like many UK, Deutsch and French citizens ;)
Most of the German/British tourists seem to come during the summer though, in contrast to the tourist birds who come during winter. Smart of the birds to avoid all the tourists!
Why the number of birds decreases and then increases? Is it because migration or due to non-observable previous times?
Some birds migrate outside Europe.
Looks like birds really like Iberia to stay during cooler times, just like many UK, Deutsch and French citizens ;)
As a person who emigrated from Scandinavia to the Iberian Peninsula, birds are not the only ones indeed :) Most of the German/British tourists seem to come during the summer though, in contrast to the tourist birds who come during winter. Smart of the birds to avoid all the tourists!
That never made any sense to me. I also go rather go with the birds north in summer where it is cool and to spain in winter when it is still warm.