Yes, it looks older and is hopefully an experienced one who recognized a danger. We think she/he was scoping out new territory. We placed a camouflaged Hav-A-Hart in front of an access point, and then Big Boy spotted him/her. No sign of it today.
Big Boy is a rescued housecat, a watcher, and can barely / never catch anything live (he prefers fluffy toys and ping pong balls). I think he was taken from his mom too soon actually. He would watch mice steal his food, that's why we have an auto dispenser for each meal, besides for controlling his weight (food was his emotional comfort in his previous life). Now if he doesn't finish his kibble we have traps nearby and catch mice in spurts. We found how they were getting in and fixed it, and now they've found another way in.
This is why I was careful but never really had worries with Big Boy around the chickens, even as chicks, though I made sure he could never get at them while so little. I let him watch from a distance while I was with them in the brooder. He just wants to be where we are, so when I'm with the chickens he wants to hang out too and watch. He's very curious but a few hackle-up stand-offs, and a charge or two that sent him scampering, have made him very respectful. Now they tolerate him to slowly move among them, more or less, while I am around too.
He says hello, gets some snuggles from me, and usually goes through to the sidelines where he can watch for mice and chipmunks and watch the chickens too, but recently he managed to get a secret sniff of a fluffy butt while the hen was walking away. Maybe not so secret, but she trusted him enough. That was a long-time goal for him, I've seen him try to smell back there before and they've never let him get close enough. For their part, they've been very curious about his tail and have 1) bokked at it, or 2) tried to get close to inspect and maybe peck it.
So he has worked very hard to gain access, and his feelings get hurt when anybody decides to remind him he's not really in the club. Even if he has a grudgingly-given honorary membership due to my petition, it's probationary at best.