Why do invertebrates prefer hedges?

Question

Did an experiment where the results showed invertebrates prefered hedges over long grass why? I also had a lack of results but I can't think of reasons why. The experiment was done earlier on this year when it was cold and wet

Answer 1

There is more shelter within a hedge than long grass.  The way that branches twist around provides a more complex structure for habitat that animals in general prefer.  In fact, habitat complexity is often an indicator of species richness.

Answer 2

As most invertebrates don't prefer hedges, there's something wrong with the assumption underlying the question.