With amphibians, if you bring an adult to the pond it will wander off; it has to have been a tadpole there, or ideally spawn. They will though, as you say, and as our newts prove, sometimes be intercepted on the way to their original pond it they like the look of it.
If that was nearly true there would only be one pond in the world with tadpoles in.
They are all connected homeopathically.
Nick
Joined: 02 Nov 2004 Posts: 34535 Location: Hereford