Hi All, I will try to be brief, but firstly, thanks for the great information on this site! I have an Australorpe hen who hatched 10 chicks 10-11 days ago. Two days ago I noticed she had taken a serious dislike to one of the chicks. She growls and fluffs up when it is near her and at one point I saw her throw it about 30 cm from her. The chick isn't injured and mostly it is quick enough to escape. The past two days it has spent most of its time hiding behind a barrier. I have taken it food and water and it is doing well. She has accepted into the nest box the last two nights, although last night she growled at it and it dove under her very quickly. Still alive and OK this morning, but it is now largely ostracised from the other 9 chicks and I am not sure if she will kill it - seems enough time for discipline to have resolved the aggression. There are three white, three buff, three black and one multi-coloured chick - it is one of the black chicks she has taken a disliking to and the only difference I can see is a black tip on its beak. I am wondering if you have thoughts on why this is happening? I am also wondering if I should just let nature take its own course and not interfere, if my interference should be continue to feed and water the chick and get it in the nest box in the evening, or if I should get the chick out and raise it by hand. Your experience of these things would be very helpful. This is the hen's third lot of chicks, but the last two were lone chicks that she hatched (others died). Thanks!