When should I candle chicken eggs to ascertain their viability throughout the incubation period? Is there a specific timeline or set of indicators that signal the optimal moment for this critical evaluation? As the anticipation of hatching grows, how can I determine whether the developing embryos are thriving or, conversely, succumbing to potential gestational failures? Perhaps it’s essential to consider the various stages of embryonic development within the egg itself. Should I conduct this examination based on a strict schedule, particularly around the seventh, tenth, or even the fourteen-day milestones? Moreover, how do factors such as temperature and humidity levels during incubation influence the effectiveness of candling? What clues should I be vigilant for, such as the presence of blood vessels or the distinct shapes of the embryos, that might indicate the success or failure of the incubation process? Ultimately, what best practices should I adopt for an effective candling experience?