Back in 2017 I had one hen about to hatch 10+ eggs and 3 or 4 more broody hens so I decided to split the eggs up among the birds right before lockdown. Unfortunately one of those hens did not like the chick that hatched underneath her, picked him up by the scalp, and flung him out of the nest. I didn't know it was her so I put him back underneath her and she did it again. I brought the little guy inside and he was awfully happy for a chicken with half his scalp missing so I treated him with blukote and gave him back to his actual incubator mama. Until his brother got super aggressive and attacked him, and I had to bring him inside until he fully healed. (Pictures of injuries + a video of him crowing at 4 weeks at the original thread:
https://www.backyardchickens.com/threads/scalped-baby-chick.1186992/ )
He grew up to be a rather special chicken who, when offered food, would take so long to look at and eventually recognize it was food, hens had already stolen it. He is also the only rooster I ever saw who would chase his own tail thinking it was a hen he could mate with. The poor little guy would spin in circles and finally catch his tail, only to realize it was not a hen.
His name was Skullkid but sometimes we called him Hei-hei. That little chicken had some legit brain damage and of the dozens of birds I've had over the years he's the only one I called my precious son.