even the leaves which blow across the apocalyptic sports ground appear to enjoy more freedom ; trees seem to sway with a sigh of relief , knowing they are safe for another few days before some sprog decides to deface or clumsily clamber up them ; birds actually emerge as opposed to making a run for it arnold was at one as he whistled his way through an impressive medley of unforgettable prehistoric melodies that all merged and congealed as soon as they left his lips .