Wendy, That’s probably the best thing to do. And I agree about the difficulty of watching sometimes. The live one does look fine, though.
Good luck! I hope the parents are still feeding it and that it does okay. By the way, the parents are likely to remove the dead chick, if they haven’t already. But I don’t see any reason you shouldn’t if you want to. Be careful that it’s really dead, though. I’m not sure about this species, but some birds eggs hatch a couple days apart, and because the development is so rapid, two babies can look very different. One might have feathers and the other doesn’t, for example. Tom