Ice spike ... at minus 2 degrees this morning.

An ice spike is a natural phenomenon where water trapped beneath a frozen surface is forced upwards through a small opening, freezing as it exits and creating a pointed ice formation that looks like an icicle growing vertically from the water source; this typically happens in small containers like bird baths when temperatures drop rapidly.

It is a long time since we have had a really cold winter Shirley.
A shock to the system !

Yes it certainly is, I couldn't open the recycling bin lid earlier and outdoors is far too cold to be out so it's an 'Indoor Day' here ... keep lovely and warm Rose.

Great to see the spike, our bird bath just has a small lump on it....

You too Shirley! x

I've never seen anything like that before! Like Lindak says I've also seen small lumps but never spikes!

David, this has happened in another bird bath here, years ago, and the spike was very long and slim. Fascinating what nature can do.