They will be back. You really need to get something that orotects,not only your chickens but your family members also. Things have a hbit of only getting worse. Protect you loved one;s.
Congrats on your RIR, they are a great breed to have no matter their age. They will form their own pecking order quickly after getting settled in. You should just watch them for a few days just so none realy get hurt,but they will be ok.
We see them right at dusk,and early in the a.m. They were in the yard at 6: am this morning. with the electric fence on they didn't even go close to the run.
Mineget a McDee's small coffe cup of whole corn in the morning,throwen to them . In the evening they get a cup of whole corn & 1/2 cup of cracked corn in the out side feeder. They also have a feeder in the coop with curmbles all the time. With 11 hens there is not any left outside when the are...
Put up an electric fence,an hang a strip of bacon from it. That should take care of the dog problem. As far as the child, call both the police and children services.Parents won't care,maybe after being cited for the loss of your chicks they might get that they need to watch their kid.