On Saturday we had an owl get into our covered run. It beheaded 1 of our RIR and one of our silver laced was also dead but no obvious reason. Stress? The next afternoon all seemed ok but later in the evening I went out to check on everyone and 1 of our buffs was dead. After a stressful event like this is this normal? PTSD in a way? I feel awful! Is there anything I can do for them?