One of the most identifiable features, at first glance, of the Lizard Canary is the cap. The feathers of the cap, in contrast to the body, wings and tail, are clear. The cap should be an elliptical shape starting at the beak, extending over the eye and ending in a smooth curve at the back of the head. A perfect clear cap is rare with many birds showing dark feathers to some degree, and this gives rise to the classification terminology, clear cap, broken cap, non cap etc.
A Clear Cap Lizard (CC) is one whose cap is perfectly clear of dark feather or feathers and has reasonable regular edges.
A Nearly Clear Cap Lizard (NCC) is one whose cap contains a dark feather or feathers which cover an area of not exceeding 1/10th of the total area of the cap.
A Non Cap Lizard (NC) is one whose head and neck are quite clear of light feathers.
A Near Non Cap Lizard (NNC) is one whose head and neck are marked by a light feather or feathers to an extent not exceeding 1/10th of the normal extent of the Lizard Cap.
A Broken Cap Lizard (BC) is one whose head and neck feathers disqualify it from being classed either as a Clear Cap or Nearly Clear Cap, or as a Non or Nearly Non Cap Lizard.
An Over-capped Lizard is one whose cap extends too far down the back of the neck. This is a serious fault.
A Baldfaced Lizard is one whose cap extends outside the bounds of the cap below the eye or below the upper mandible.This is a serious fault and the bird should not be used in a breeding programme.