The subsequent photos don't depict the chick as truncated. Goes to show how deceiving photos can be. Also, showing her standing beside a cup, as long as it's not a children's tea set, she looks more normal size.
At this age, constipation can be an issue. It won't hurt to give her some coconut...
I have some questions that are provoked by the proportions of the chick pictured.
Is this chick a bantam breed? Or is it much smaller than the rest? Judging from the state of feathering, it should have a much wider proportion of head to body ratio. If this is not a bantam, then it is likely...