Confucius has many meanings, including "greatness", "prosperity", "elegance" and "beauty". Bird means bird. So peacocks can be understood as big birds and beautiful birds.
In addition, in poetry, it is often called a hole, such as
"Chu Ci Jiu Ge Shao Siming" "Kong Gaicui? Nine days Xi hit the comet. "
"Dong Fangshuo's Songs of Chu (seven admonitions)" "Luan Huang Kong Feng, the sky is far away"
"Han Sima Xiangru Biography" "There was a girl named Kong Luan ..." Wang Yi's note: "Kong, peacock also"
From the latter two situations, "hole" and "chaos" often appear together, indicating that they are similar and corresponding. So we can start from Luan and maybe find something.
Luan, which literally means bird, moves the Chinese dictionary again: Luan, the legendary phoenix bird and the divine bird. In this way, peacocks have great, beautiful and sacred significance. Birds are a general term, and holes are the characteristics of this bird. Just like "sparrow", they are all birds, but Kong and Ma are obviously two different things, representing their own characteristics.
I hope I can help you! Wish you a happy life!