The county population is now known to have exceeded 20 pairs including up to three pairs in the centre of Norwich, and two pairs in both Thetford and West Acre. In 1963 following 10 weeks of Arctic weather with biting easterly winds and exceptionally severe frosts, only two grey wagtail nesting localities were mentioned in the Norfolk Bird Report. Tail-wagging is almost incessant and accentuated by its considerable length. Feeding at the water's edge, it moves with a dainty walk, ever changing direction, dipping head and neck forward at every step and careless if the water flows over its feet. It may pause a few moments before running again at a surprising speed.
Insects form the bulk of the diet even in winter though occasionally minnows are also taken.
Unlike other wagtails the grey regularly perches in trees, especially when disturbed while feeding. There it remains quite still for as long as the observer is visible.