Yes, they are. All of my 5 BR roosters have been friendly and even got along well enough.
And the hens are prolific layers and very good mothers. Some of my hens even reached the age of 7 and 9.
No need for a vet so far, these are normal noises they make while checking out new territory and somehow trying to connect with their former flock mates.
Cute little guy. I would de-worm him and inspect for lice.