I found today sitting on a knot of growth in a tree, a tiny snail, its shell in the shape of a winter bud, coloured and shaped just right - it was a stroke of luck to have found it. I have never seen a snail like this before, are they common? or rare? have they a name? are there many varieties of snail like this for different tree / bud types?
There are many species of common snails that are quite like leaf buds of trees. There are many shapes of buds, and there are many shapes of snails.Try for instance genera like Chondrina, Pupilla, Vertigoor something in Clausiliidae.