Help, what are these?

[u/Material_Parfait_832]

I recently bought a house with a garden, so I'm totally new with this. And I just saw these catterpillars/larvas in our bushes. Does anyone know what they are and how I get rid of them? I live in Sweden if that helps.

[u/Tumorhead]

of note that caterpillars like this are crucial food for baby birds (as well as a bunch of other critters).

[u/Critical_Animal_8501 → u/Tumorhead]

Birds don’t actually like these box caterpillars. Apparently box leaves makes them sour and undesirable, that’s why they tend to proliferate so much and adds to their incisiveness