One of my Silkies looked just like yours at that age and it started around the same time as your little one started showing signs. As she got older, it got worse. Most cross beak hens will have laying/reproductive issues later on down the road so that's something to also take into consideration if shes a female. I chose not to cull mine and devoted a great amount of time making sure she could eat properly, drink, get grit, oster shell, so on and so forth. I modified feed bowls and waterers for her to use because she was not able to use the standard chicken nipples or anything of that sort. I had to make her feed a mash consistency so she could pick it up easier. I did weekly weight checks to make sure she was maintaining a healthy weight. She ended up passing last May after a brief illness, she was 2 years old. Surprisingly, cross beak chickens can live a pretty normal/productive life, if cared for properly. Mine never had to be separated from the flock or anything too "special" besides monitoring food intake and whatnot. I did have to file/trim her beak periodically because she wasn't able to keep it filed down like a normal chicken is able to. Other than that, she walked around and mingled, roosted, and interacted with the other chickens just like she was a normal chicken. Their personality is unmatched and they tend to be the most sweetest, loving birds toward their owners/caregivers. They're just so appreciative of the love and care you give them.
