Unwanted chickens.... HELP!?!?

My delightful other half has accepted 2 17 m/o hens and a erel also 17 m/o, from a friend of ours and they are now scratching about in my rabbit run making a huge mess and no doubt by tomorrow morning, upsetting my nieghbours. He did it on a wim this afternoon. I have 4 rabbits in there and the space is adequate for them however I was hoping to wait a while before we got chickens so that I could go to a farm and get the plymouth rocks that I actually wanted. I have kept chickens before so I know what I doing with them. Now I'm stuck with these scraggy mongrel birds who are probably good layers. Do I eat them for dinner or give them back??? And where the hell am I supposed to put them tonight?? Grrrr! Dont suppose Im going to get any sensible answers as common sense says I should just send them back but I'm so pi$$ed off I need someone to make light of the situation before I either murder a chicken or my boyfriend!!