How would you describe a 'goose rumped' horse?

A 'goose rumped' horse is best characterized by rounded and full hindquarters. This term describes a specific conformation where the hips are noticeably rounded, contributing to a robust appearance in the hindquarters. The presence of rounded hindquarters can provide advantages in terms of movement and power, as this conformation allows for a greater range of motion and stronger propulsion, especially during activities such as jumping or galloping.

While other types of hindquarters exist, such as flat and undefined or high and narrow, these descriptions do not align with the fullness and rounding associated with a 'goose rumped' horse. Muscular hindquarters can be a feature of various conformations, but the key characteristic of being 'goose rumped' specifically refers to the roundness rather than the muscle definition alone.