The other day a Nuthatch came obligingly close and posed prettily for Barry to take photographs.
This is no insect! It looks like a berry, but our holly had no berries this year and there are none on the ivy - wrong colour anyway, for either of those. Maybe it's a larva of some sort, but spherical??
Pause for thought . . .
This is how we typically see them, parading down a tree trunk.