Just some things I noticed:
The scene seems to be heavily edited. Notice when Mombasa is looking up in the tree, the others (except Isabelle) are walking off in the background. Then, right after he says "It's here", they're all standing next to him again inside the hunting camp (instead of the jungle they were standing in moments earlier).
There's clearly more footage cut out of the scene. But in the meantime, the same music theme keeps on playing, so it has to be added to the edited footage later...