Its selection dates back to the 1800s in the city of Girvan in Scotland, which then spread across the country. There were many names attributed to the breed; it was initially called Girvan, in homage to his hometown, then was also called Glasgow Fancy. Over the years he tried to cross it with the Belgian Bossu, but this mestizo did not bring improvements, but rather caused a lot of damage to the selection, therefore from 1970 began a sort of reconstruction of the breed that was successful and that gave life to current subjects.
Penalize sizes smaller than cm. 17; never the higher ones.
When the subject assumes his ideal position he must keep well back from the roost. The profile of the head, neck and back must form a circular line while the tail will pass, curving under the perch, continuing the line. At this moment, the tail, the abdomen and the chest form a concave line. Thus was born the outline of the moon wedge. The legs must be brought tight, never spread apart and will be long, slightly flexed, not rigid (from Gibber). The thighs will be visible. When the subject gets into position he must move briskly and show a maximum of action, he must not keep it statically or rest on it. In no case will he have to flicker nervously in the cage ,; it will not have to support itself with a paw to the bars of the cage. The position will be taken above all by jumping from one perch to another (in English the hop), when resting on the arrival perch. The theoretical maximum of the curvature is 180 degrees, but minor curvatures should also be taken into account as long as they are of constant radius. A very serious defect is the head carried under the shoulders so that the maximum position is not with a head carried low and a tail carried straight forward even if this involves a curvature of several degrees.
The body must be long, narrow, slender and cylindrical. A good chest will be falling into a concave curve. The section of the body must be perfectly circular. The full or heavy chest is to be considered a defect as well as pronounced hull or knife breast. Taking a position, the bird must have the shape of a moon wedge as much as possible. The outlines will be clear and precise, given by a necessarily smooth and closed plumage. Due to the position pushed to the extreme, it cannot always be avoided that the feathers of the chest and the hips slide a little on each other and the judge will have to admit it, up to a certain point, and not penalize it too heavily, but the best plumage will be tight, compact and very closed. From this point of view, the frosted subjects are disadvantaged and must be taken into account at the time of the judgment. The subject must never give the impression of heaviness. During the position, the more the wings will adhere to the body, with the tips not detached from the attachment of the tail, the more the subject will be of value.
Shoulders and back:
High, narrow, well-rounded shoulders without depressions are the ideal shape. The back must be well rounded and full, forming an arch from the shoulders to the rump.
Head and neck:
Small, oval, slightly flat, serpentine head, not round or hazel. Eyes placed forward, long and narrow neck that blends harmoniously with the neck. Neck very long, narrow, curved that does not present angularity nor the attack with the neck, nor to that with the shoulders.
Health and cleanliness to the maximum. It must express vitality.
A long, narrow and well-closed tail is required which, during the ideal position, must push forward as far as possible under the perch. It will have to continue the curved line of the back with a fluid and soft passage. The tail end must be covered and protected by a very closed plumage.