Usually the cheapest aggregate you can buy is called "roadbase" or "A gravel", it is what's used for building the foundations of roads. (Talk with the aggregate co. representative to figure out what they're calling it
). It is a mix of everything from large gravel pieces on down to sand and some dirt. As long as it is 'clean' (no metal bits or glass) and the gravel in it is not unduly sharp, IMHO it is an excellent economical free-draining fill for chicken runs, larger livestock 'sacrifice paddocks', etc. Not that sized gravel with pure sand atop it is any worse, necessarily, but definitely more expensive
Make sure you can GET a truck or a wheelbarrow (repeatedly) to the run site without creating a mucky rut in which wheels disappear forever.
Good luck, have fun,
Pat


Make sure you can GET a truck or a wheelbarrow (repeatedly) to the run site without creating a mucky rut in which wheels disappear forever.
Good luck, have fun,
Pat