We had 12 16 day old chicks. We let them out in a secure yard with aviary net and fencing in the day with momma hen and put them in a large metal bird cage on our porch at night. The last thing is to monitor temps @ night and last night we cobered with a towel and all went to bed fine. Dogs were barking @ 2:30 no problem noted. But this morning all 12 were dead. All had signs of trauma but was minimal in severity. Only one was dramatically injured. And the towel was in perfect position as we had left it. Cage door secure. We are heart broken by the loss. Any advice? They coud not have possibly done this to each other could they?