Common trails of all horses with a basic colour bay

• The coat is a shade of brown (pale yellow/red to dark brown).
• Mane and tail are black.
• The distal limbs are black.

Genetics

Possible gene combinations: AAEE, AAEe, Aa,EE, AaEe

There must always be a dominant E (to provide the black pigment) and a dominant A (to restrict the black to mane, tail and limbs).

Shades of bay

• Dark or mahogany bay: coat colour is dark brown.
• Blood or red bay: coat colour is red-brown.
• Light bay: coat colour is light brown.