[header] How to determine the sex of african grey parrots [title] Consider the body. [step] There are slight differences in body type and size between males and females. First consider your bird's general body type to get a gauge of whether your bird is more likely male or female. 
From there, you can look at more subtle physical characteristics. [substeps] Males are usually 12-14 inches (30-35.5 cm) in height.