Beehive
Beehives produce Food.
To be able to produce honey, they need a balanced diet.
They can find food in the forest or on wheat fields.
They prefer the forest, however they are open to flying longer distances -
it won’t give them more food, though.
Nerdy Details
$$x = \ln((f+1) * (w+1)) * 0.6$$f: Number of forest tiles in radius 2w: Number of wheat tiles in radius 2x: Production rate