New on here, know nothing about chickens. What I've identified as a Brown Leghorn showed up in my South Florida backyard a couple of weeks ago going around foraging and clucking a lot. It hangs out in a row of bushes against a fence. When I tried to approach, it runs away. But I noticed a couple of days ago that it wasn't clucking, so I went out and tried tossing pieces of bread and some raisins to see if it would react and it did in deed. Races to them. Will almost come close enough to take a piece from my hand when before I couldn't get anywhere near it. But I'm concerned about it not clucking. It may have been making a real quiet kind of chirping or maybe even whining sound. I'm hoping it's not sick and won't know what to do if it is. This is not a rural area - South Florida neighborhood. Any input is appreciated.