After the wheat harvest there's the wheat straw, seemingly useless stuff there is a huge market for it. In itself it has very little nutritional value, but it is used to bulk high energy cattle feed, keeps the bovine digestion healthy. Mushroom growers use it to grow mushrooms on, after it has been composted, people who have horses uses it as bedding in stables, the list just goes on and on.
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Baled wheat straw.
Herons just love the short wheat stubble, lots of insects and mice.