SteveL replied on 11/10/2016 22:10
Posted on 11/10/2016 22:10
have just watched a recording of the BBC programme on the migration of the painted lady butterfly. Found it a bit disappointing. Short on science. Never actually explained how they proved the butterfly flew all the way from morocco for a start. Showed lots of tracking gadgets but didn't fully explain how they arrived at the results they'd collected.
SteveL
Motorhomer