Is it possible to free-range and have tender chicken?
Never have raised any birds designated specifically as 'meat birds', pretty much everything is what seems to be referred to as dual purpose.
I've never had one that was suitable to eat after being roasted. Sure the breast meat is usually tender, but the legs and thighs certainly aren't.....and I'm not talking about old birds, heck culled cockerels butchered right when they start to crow taste that way too.
Stringy and tough.
We butcher somewhere between 50-70 birds a year for our family and needless to say, we eat a lot of stewed or crockpot chicken.
I have purchased a breed called Belgian Malines and they are a meat bird. I processed my 2 cockerels at 18 weeks. I have roasted one of them and it was wonderful. I had free ranged the boys from age 5 weeks for the summer and due to colder wet weather I put them in for the last month in a 8x8 pen. The dark meat was brown/red in colour but it was not tough or stringy. I was very encouraged by this as I was concerned it would be tough due to their age and free ranging. I roasted a Malines and a 14 week old Cornish X in the same roasting pan ....stuffed/seasoned both the same and they were wonderful.
So maybe this is not a fair example like the other fellow that took his right out of the field and processed. My 2 did have almost a month indoors....my 2 cents.