I have 2 chickens and for the last couple of months have allowed them out of their small run to roam the whole of the garden. They love it and do find loads of grubs and bugs. Lately they have made quite a mess on the borders and now that new growth is sprouting I have had to restrict them to and hour or two and only if I'm in the garden to keep an eye. They are very clever, they know that me digging means worms, also that seed can be found under the bird feeders and they understand OFF when I catch them on the borders where I don't want them, they do push their luck sometimes and go back on as soon as you turn your back but another OFF and they behave. Wouldn't be without them as they do eat the grubs, supply lovely stuff for the compost bin and eggs too.