I don't recall that one, and I thought I knew Gerald Durrell's work pretty thoroughly. There is a book of that title by Tim Cahill, though; maybe that's what you're remembering?
On the upside, I've never known anyone else who had even heard of Durrell.
I don't know whether this is available online, but I can recommend it as a pleasant programme, with lovely scenery, interesting storylines, and engaging actors.