Spot on above! I'm also not seeing BCL there. Do you have other pictures? My Colombian male was a bit strike happy the first couple of months I got him. First, try to make his living quarters as close to his old setup as possible. Give him some deep substrate to burrow in and if the cage is too big make a smaller enclosure within the big one. My guy used a moss humid, hide for a long time. Also after a couple of weeks hook train him and handle him often. Does he strike once you have him picked up? Usually they mellow once in hand. You will be fine. BCL males and even BCI are not huge and even my almost 2 year old male would not be a concern. My bet is your new snake will settle. This is common going from BP to boa. You'll do fine.