Arriving just in time to give that pot a wary look, because he already knows the usual outcome of Lambert trying to cook. It isn't on fire, though, so that's... an improvement? Probably an improvement.

"Nothing world-destroying happen while I was away?" Childermass asks. It's in jest, not something terribly common from him, but it's better to lead with that and try to cut through the similarly distant look he'd been wearing as he walked up. It does help that Baker immediately stirs from near the other side of the campfire and gets up to greet him, though, and so by the time Lambert can even answer that, the magician will be talon-deep in fluff, scratching gently through a big feather-adorned mane.