The magpie is probably the most easy to identify member of the crow family, as it is black and white. For such a relatively large bird, it is quite timid and seems to move away if you just look in its direction, so it's not always easy to photograph. They tend to be flying from treetop to treetop, or rummaging around on the ground scavenging. This one was mixing with the sheep. It was probably looking for insects and grubs disturbed by the sheep grazing. the one on the sheep's back may have been doing the same, or even looking for nest material.

Like most members of the crow family, they appear black, but when the light catches their feathers, the black becomes a beautiful iridescent green/blue. Magpies are also lovely in flight, having a long wide fan shaped tail.