The day before yesterday Ieft my 6 baby chicks with one of my older chickens and 2 minutes later after I went in to get more feed for them I found one of my chicks had a bloody nostril. It seemed like the top part of the nostril was gone. I thought maybe the chicken had pecked my chick and didn't think too much about it. Yesterday, I put them outside o the grass again but in a cage separate from my older hen. Later that night I found another chick had a bloody nostril. And this afternoon I found two more with blood on their noses. Im not sure what to do and why they are getting bloody noses. I have pictures attached. Please let me know if there are any suggestions on what I should do.