It's probably because you have your eyes open, Rhiannon - most people don't. In our garden in Norfolk, which is also in arable land, we have had sedge warblers, corn buntings, turtle dove, goldcrest, great spot woodpecker, fieldfare, and we get pink-footed geese in the fields.
Just walking along the Thames, noticed a ton of blackthorn flowering now in the hedges. So I have seen the hedges beginning to flower, birds breeding, and bees buzzing, this week!