 They are generally wary and when disturbed run uphill and then launch themselves from the crests in flight, getting up considerable speed.They are more prone to predation on the alpine pastures than on steep slopes and flocking helps them to keep more eyes out for predators allowing them to forage more efficiently.In the Hunza range, flock sizes tended to be larger in rocky habitats, where they risked being attacked by Golden Eagles, than on grassy meadows.