You do not have to cull if you don't want to. A bird with such a defect obviously should not be bred from, but if you are willing to take the time and put in the work there's no reason they can't be pets. However, this chick will require a lot of extra help to thrive. Cross beak chickens can starve to death with a full bowl of food under the wrong conditions. Even when they make it to adulthood they do have a significantly shorter life expectancy. Most people believe there is a high likelihood they may have other defects that are less visible (ie problems with their internal organs).
If you don't already have a gram scale I would definitely invest in one and set a routine of weekly weight checks to make sure the chick is growing and watch out for any weight loss.
Search the forums here for cross beak, there's a lot of threads with helpful information on managing this condition.
If you don't already have a gram scale I would definitely invest in one and set a routine of weekly weight checks to make sure the chick is growing and watch out for any weight loss.
Search the forums here for cross beak, there's a lot of threads with helpful information on managing this condition.