Frogspawn Success

After the recent operation to drain the pond to prevent more frogs dying in the foul water, I deliberately put some rain water from a water butt into the pond just in case any more frogs turned up to spawn in the usual place. This turned out to have been a good move, because yesterday the pond contained several balls of frogspawn. Meanwhile none of the pairs of frogs I rescued and relocated to the other pond have spawned there. Most of them appear to have moved on from that pond, and I suspect they returned to this pond to spawn when we had a lot of rain the other day. It looks like the instinct to return to the same spawning location year after year drives them even after they have paired up in a pond. They have spent over a week in pairs since I relocated them, but appear to have made the trip back up the garden to the original pond before spawning.