From looking at pictures of Timneh Greys, you may not be able to tell the difference between them and the Congo Grey immediately. When compared, the Timneh Grey is visibly smaller as well as being much darker in colour. The body is almost completely dark grey with a few lighter gradients on the bottom, legs and around the eyes.
Two distinct features are the unique dark red colour of their tail and the colour of their beak which is a paler, skin type tone. It is difficult to distinguish between males and females and more often than not owners are mistaken and can end up with their ‘male’ pet laying a few eggs.