Today is Wiltshire Day.

On this date in 2007 the Great Bustard flag was flown for the first time at County Hall, Trowbridge.

There are three flag designs associated with the county of Wiltshire.

Like the proposed flags of many other counties, two of the three have no official status as they were not designed by the College of Arms. One of the designs, the "Bustard Flag", was approved by a full meeting of the Wiltshire Council on December 1 2009, as a county flag and subsequently registered with the Flag Institute.

The "Bustard Flag" was created by Mike Prior and designed by Helen Pocock, a graphic designer, in 2007.

It is partly based on the flag of the Wiltshire County Council, including the alternating stripes of green and white that represent the grassy downs of the county and their chalk underlay.

The colours can represent hope, joy and safety (green) and peace (white).

An image of the great bustard stands at the centre of the flag. This bird had been extinct in England since 1832, but is now part of an intensive ten-year breeding programme on Salisbury Plain. The border of the circle, in six sections alternating green and white, represents the stone circles of Stonehenge and Avebury in the county. The six portions also represent the six surrounding counties of Gloucestershire, Oxfordshire, Berkshire, Hampshire, Dorset and Somerset.

Wiltshire Museum is celebrating Wiltshire Day with historian Tom Holland's

talk about his native county.

From stone circles, crop circles and cricket to UFO's and Jerusalem - all different aspects of Wiltshire.