Birdwatching tourists are ruffled when they spy the body of alandowner who had hidden the nesting site of the rare RedCrossbills from them. When the team unearths a ruby from a25-year-old jewelry heist connected to the case, Rex tracksthe birdsong to find the treasure at the secret nesting site,before the killer can get there first and destroy theendangered birds standing in his way.
