Yesterday morning I came across these little yellow spheres on a on my Sunday morning foray round the lakes. I think they are the sporangia of a slime mould, possibly Arcyria pomiformis. [Note added 2012-02-17: more likely a Trichia sp.] There were also some more mature specimens nearby:
Photos taken in Whiteknights Park, Reading University grounds, Reading, UK, on 2010-03-07.
When I got back home, I realised that I had probably photographed the same species a few weeks earlier, but at the time I had assumed that they were insect eggs:
Only when I took a close look at this photo did I notice that they too were fuzzy.
Photo taken in the Wilderness, Whiteknights Park, Reading University grounds, on 2010-02-13.