I managed to capture my feral barn cat (now my dear friend) with food. I placed a cage on the porch near where I fed her for several days. Then I began to move the food dish closer to the cage. Finally I put the dish right at the door a couple of times; ended by placing the dish just inside the cage.. After I'd done that a few times, I moved further to the back of the cage and quickly shut the cage door on her and went straight to the vet for spaying and rabies shot.
I thought for sure she'd never 'speak' to me again after I brought her home, but within a day or so we were back to normal and the cage was back in storage.
Jan in VA