ocr: DOMESTICATED BIRDS ANKLE SPURS These are used as weapons Spurs OFTEN have a sharp, its enemies. Spurs contain a solid COTAnSOTEN point, called a spur, core of bone, surrounded by a layer of on the lower part of each leg. The bird keratin. The layer of keratin grows slowly uses its spurs to fight its rivals, fluttering but constantly, and this stops the point into the air and kicking out against from wearing away.
