Posted on 18 April 201617 April 2016 by David Mass of frogspawn, Penn Common Large quantities of frogspawn in the small pond towards the Penn end of Penn Common. The black blobs in the middle of the eggs had already began elongating as they developed into tadpoles in the first week of April. Post navigationPrevious post: Parakeet drinking at a bird bathNext post: Little egret preening, Doxey