After reading some of the posts on here about chicken/rabbit manure I placed a wanted add on my local freegle( a.k.a freecycle) asking for some. Within 1 day I have been offered a weekly supply from 6xchickens, 20x rabbits and 2xginue pigs.
Great way of getting free manure as well as other stuff
http://www.freegle.org.uk/groups/Neil