The chicks are in their brooder box, in my dining room. This is where we started and wanted to keep the continuity until they were a bit older. They were fine when I got my kids off to school. I went to work, dogs × 2 in cages while we are away because they are pups. So they were by themselves all day. I left to peeping chicks at 9 am and came home to peeping chicks at 1:30. Everyone was acting the same. I did wash my hands and check everyone's bum, no issues since Saturday, and then they were left alone until I was doing chores and heard a chicken "scream" while doing dishes. That was the beginning of a very long 1.5 hours. The first chick was flopping around and gasping. I'm a nurse I knew it was bad. It ended quite quickly within 5 min. All the others were acting fine. I had to leave to pick up kids, when I returned I found my Rosie dead with the 2 chicks that are still alive sleeping by her body. Then 2 more layed down and kind of gasped and twitched before they died. I really want to carry on but at this point we are 5 days in and have lost 5 out of 7 chicks. I am a health care worker who wants to help and I can't figure out what's wrong or what I did wrong. Thank you for any advice. The weather was rainy but no crazy storms and they are in the house. The chicks were actually acting great, I told my husband last night I thought we were going to be ok with them. No signs of illness. The first day we got our chicks we got 4 and 1 died within 24 hours. The nursery gave us the electrolytes and we but 3 more. Now we have 1 original chick and one new chick.