Conspiracy theory

Looking back at my entries here, I realize that the squirrels' retrenchment began not long after the incident of the dead squirrel.  

Maybe someone has been poisoning the squirrels.  That would explain the dead guy I saw.

Problem with this theory:  Shouldn't there then be additional corpses on the bluff or the hillside? Even if they died in their squirrel-tunnels, you'd think there would be an accompanying odor, not to mention more dazed bereavement on the visages of the few squirrels remaining on the hillside.