Frogspawn at last

The pond was created in 2014 and I was expecting to find frogspawn because I used to see a lot of frogs around. Finally in Year 4 there is frogspawn - four clumps of it. Actually I saw markedly fewer frogs in 2017 so this is a surprise. I'm hoping for grass snakes now there is a food source for them but I am not sure how they might find one small pond far from other standing water.