Another thing u can try this year is heaps of brash/branches, if u want to do it over bigger open areas than just wigwams round tree butts knock some stabs or tree stakes in and pull a wire or a rail to act as a ridge beam and lay the brash on forming a brash tent or corridor.
Good early roosting/perching too
I'd also think about scattering some Reed Canary grass about, plenty of bare ground just give a wee rake up althou it takes 2 years to grow, if planted it now might be not bad for next rearing season.
The other thing which is probably against best practice now rhodises or laurel, u can often see clumps growing in random woods but if u look closely quite often either been a pen or flushing point for some old drives.
U just have to keep on top of it.
There is another shrub i forget its name now looks a bit like box, something nitelda?? but again will send of suckers everywhere after a few years , just got to keep on top of it