Here's an image of a rooster by Shen Zhou a Ming Dynasty Chinese Painter also famous for landscapes and calligraphy.
Its a slightly scrawny scruffy bird fluffing its feathers and clearly looking back at the artist.
Perhaps a favored pet wandered into the part of Shen Zhou's residence where he had his studio pavilion? Its not a pretty bird but definitely one with personality and attitude.
The brush styles used for the feathers complement and contrast with the different types used for the branches and then there's the restrained and careful use of brown coloring to admire too!