A white ribbon in a horse's tail means what?

A white ribbon in a horse's tail specifically indicates that the horse is for sale. This convention is commonly used in equestrian contexts to alert potential buyers that the horse is being offered for sale and that inquiries should be directed to the owner or seller. Utilizing a white ribbon serves as a visual cue, allowing those interested in purchasing to easily identify which horses are available.

The other meanings often associated with ribbons, such as indicating behavior traits like kicking, or designations of gender, do not apply in this case. The practice of using ribbons in tails can vary depending on the context, but a white ribbon is widely recognized in the horse community for signaling availability for sale.