You would be surprised at how active some warrens can look without holding. I have a abit of ground, woods backing onto fields, hedges round the fields ect. There are alot of open sand warrens in the middle of the fields, fresh sand all kicked out, footprints, prints all over them but we rarely get much out of them, normally 1 or 2 or less. The hedges and woodland burys seem to hold rabbits more. We have been up there with the lamp and seen rabbits all about the open warrens so I think they are just using them as play warrens or just pass though in the night? Quick cover for them when feedin