Generating treasure hordes can be a time consuming task, so the work has been done for you. Pre-generated treasure saves you the hassle, with 6 hoardes to randomly choose from for each APL(average party level) from 1 to 20 and treasure quantity, from incidental to triple.
The Pathfinder Roleplaying Game has rules for creating different hoardes for the various monster types. This volume covers the treasures found on or with Animals. Could this be from their prey or simply a magpie-like curiosity?
These results assume that a medium level of advancement is being used. If you are not using this method, then you need to adjust the result accordingly.