My biggest pests (literally) are the wild boars. The biggest one is as big as a sofa. Messing up my meadows literally every night so invasive weeds can replace the native herbs. Have to surround every young fruit tree not only with mesh against the deer but to fix the mesh30 cm into the ground against the pigs.
Apart from that green woodpeckers, crows and ravens, lizzards and snakes, foxes, badgers, weasels and ferrets, lots of small birds and bees, tons of stag beetles, some great capricorn beetles, different falcons and buzzards and even a breeding pair of giant eagle owls.