All birds experience stress, which can weaken their immune systems and have negative effects on your flock. Causes of moderate stress can include extreme weather changes, predator attacks, exposure to germs and changes in the environment. FlockLeader Recover Plus supports the health of a flock by preventing dehydration and the risk of further stress. Symptoms of moderate stress in poultry can include panting/labored breathing, lifting wings away from body, appetite loss, diarrhea, pasty butts and dirty eggs.