Bland. It's a film that slowly creeps through its 131 minute runtime.
I do really like Brian Keith as an actor, but he really did get the more lamer Disney films didn't he? 'The Parent Trap' aside, all of his others with the studio up until this point are marginally good at best; despite Keith's talent.
'Those Calloways' is poorly paced and doesn't have any truly lovable characters. The shtick with the main family is that they are opposed to hunting, yet their whole thing is hunting in itself. Sure, they're doing it for differing reasons, but it's hardly a massive gap - it's not like the film portrays them as disliking it either.
As for the cast, Keith is the best on display as Cam. Brandon deWilde (Bucky), Ed Wynn (Ed) and Walter Brennan (Alf) are fine. All of the antagonists are forgettable, though. Considering how long the film goes on for, they hardly do anything with the exception of one moment. There's a few scenes which could've done with some music too, particularly ones involving Bucky and Whit (Tom Skerritt).
There is definitely a good message attempted, but it kinda falls flat unfortunately. This isn't one I'd recommend, even if it isn't terrible.