
(I didn't see the program but) Something I've wondered about Red vs Grey Squirrels that I've never managed to get an answer on (on a couple of wildlife forums I'm a member on) is how we are told about how Grey Squirrels in effect drive out the Red's (eg squirrel pox, resources, etc.) but when I cycle tour in France I see loads of Red Squirrels and never seen any Greys. How come the Greys have not taken over in eg France. (Similar in Germany & Belgium).(there is a TV Wildlife thread, but I can't be *rsed to find it so
I heartily recommend last night's BBC offering "Red Squirrels in Cumbria"; it nearly annoyed me with a little toooo much cute, but amongst that was a lot of interesting science, environmental management, pest control, dat sorta thing. And beautiful footage of the fells, and wildlifes!
I think someone brought greys over to the UK, but not to mainland Europe.
Many years ago my parents retired to a small island only connected to mainland by a causeway maybe ½ mile long and creeks it crosses several hundred meters wide and for years no squirrels. Then more recently a wildlife organisation clicked it would be a great place for red squirrels (no competition) so legally introduced them. Locals really supported the move and were all putting squirrel food, reporting sightings. several years later they are well established. Seems isolated enough that greys don't move there. (Mersea Island in Essex). The causeway does flood for a few hours at the top of spring tides but the flooding won't keep anything from crossing.I found this: "On mainland Europe red squirrels are much more common and greys are only found in Italy, so efforts are directed at preventing their spread across the Alps."
... which fits with last night's prog, as they said grey squirrels struggle to migrate over high ground (yes, even in Cumbria!) and need decent tree density: so the Alps would make a good barrier.
Many years ago my parents retired to a small island only connected to mainland by a causeway maybe ½ mile long and creeks it crosses several hundred meters wide and for years no squirrels. Then more recently a wildlife organisation clicked it would be a great place for red squirrels (no competition) so legally introduced them. Locals really supported the move and were all putting squirrel food, reporting sightings. several years later they are well established. Seems isolated enough that greys don't move there. (Mersea Island in Essex). The causeway does flood for a few hours at the top of spring tides but the flooding won't keep anything from crossing.