Magpie or Pied Wagtail?

These two get mixed up constantly. Here is what actually separates them, taken from each bird's own page.

Illustration of a magpie

Magpie

Pica pica

Sometimes mistaken for a magpie at distance on a roof or car park because it is black and white with a long tail — but it is tiny, no bigger than a sparrow, runs rather than hops, and pumps its tail constantly up and down. A magpie is the size of a pigeon.

Illustration of a pied wagtail

Pied Wagtail

Motacilla alba

Side by side

MagpiePied Wagtail
Size Bigger than a pigeon in total length, though much of that is tail — roughly 45cm nose to tail. Robin length in the body, but the long tail makes it look bigger — around 18cm overall, and far slimmer.
Where you'll see it Lawns, rooftops, tall trees and roadsides; raids feeders and fat blocks. Short grass, paths, drives, car parks, flat roofs and the edges of ponds and puddles. Not on hanging feeders.
What it eats Beetles, leatherjackets and worms, carrion, scraps, fruit and grain — plus eggs and chicks in spring. Insects, particularly flies, taken from open ground or caught in short fluttering chases; some seed in hard weather.
When Resident all year; most conspicuous in late winter when groups display. Resident all year. In winter birds feed alone by day and gather in large communal roosts at dusk.
Status Green listed Green listed

Still not sure? Describe what you saw and we will rank every garden bird against it — including these two.

Both descriptions are taken from the species pages, which cite the BTO and RSPB. Reviewed 2026-09-20.