Nye, Anse, and a couple of the other riders had some of the recently broken mounts out, showing them off to Oliveri.
Oliveri was commenting on the fine qualities of the mounts. 
mnli hypothesis: Oliveri was commenting on the fine qualities of the mounts.  premise: Nye, Anse, and a couple of the other riders had some of the recently broken mounts out, showing them off to Oliveri.