What a good idea!
I'd say the hedgehog, the kingfisher and the butterfly. These are the ones most likely to be seen in the wild and greeted with joy. Well, there might be more common ones, but surely everyone loves a hedgehog?
Puffins are adorable and iconic, but most people will never see one. The fox, by contrast, is almost too commonplace - they practically run London now. Salmon just make me think of intensive farms and sea lice.
Where's the badger? Did it get culled 😕