I really like the rowan tree. We have one that set itself (not sure whether it was there when Pip moved here in 199? or not but it certainly wouldn't have been planted there) in one of the old pigsties (pen part) in the field. I'm sure we could use the area it occupies for something else but it looks really good where it is.

I've not noticed an overnight raid of berries Jack mentions but it most certainly does provide food for the bird.

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On overnight raids, when I lived in N Wales, we had a walnut tree. Every year, I hoped to get some walnuts but it was almost like the squirrels knew - sort of "they are going to harvest these soon - we'd better get in first!".