The racing pigeon "Dianyancong" is the golden eye in the pigeon's eyes! "Dianyancong" is also called "Diancongyan".
The growth site is in the pupil like the fundus comb membrane, but the former is at the bottom of the pupil, while the latter is on the surface of the pupil, and the specific location is not fixed. Some are above or below the pupil, while others are in front or behind the pupil. Some pigeons may have only one dot in their eyes, while others may have two or three dots in their eyes. Those with only one point are called "dianyan", and those with more than two points are called "dianyancong" or "diancongyan".