I don't know where the BBC does their research, but I know for certain that the Little Owl (Athene noctua) is native to the UK, especially to the
Southern part of the UK.
Maybe there have been additional couples added to the native owls in the UK already but the Athene noctua have always been native European owls and
are built for the European climate.
If they are leaving the UK all of the sudden, or if their death tolls rise, it would be a good reason for researches to look at external causes... The
little owl eats a lot of different bugs and rodents. Poison in it's food chain could kill it of. All of the sudden leaving the UK could indicate we
have a harsh winter ahead and it's seeking for warmer places.
I own three Athene noctua myself, I have to say that I haven't seen any behavior in my owls that indicates a harsh winter is coming.
edit/ this is a picture of my Little Owl Rocky
[edit on 16-10-2009 by DrDragonfly]


