We have a lovely Cuckoo Maran cockerel, Olaf, who lives with 11 hens. We have had him for maybe 2 years or so, he came from the neighbour where he lived with just a few hens. He has always seemed good-natured and not mean with the hens, although he is quite a big boy and does like to keep busy. About 6 months ago one of the hens, Emily, sustained a wound presumably caused by Olaf's spurs. She was separated to heal and is now an auntie to my rescue hens in a separate run. Recently Olaf has taken a liking to a particular hen still in with him and she was looking a bit ruffled up but no injuries... until today. Today she has a huge wound to her side, is limping on that side and also bleeding from her other side as well. We are absolutely mortified of course and are 99.9% sure this is courtesy of Olaf. Hen has been separated and wound treated and she is oddly spritely but what to do with Olaf? My family have had chickens for 40+ years and have never had to trim spurs, but aside from culling Olaf that would be our only option to protect the other hens. My mum has bought some special trimmers and some powder to stem the bleeding should we go too far, but we don't really want to hurt him. If anybody has any advice it would be greatly appreciated.