Hello and welcome to BYC, You found an Awesome poultry Forum to be a part of with many great knowledgeable members who are more then willing to jump in and help you with any questions you may have.
Even though it's called BackYard Chickens, there are some really knowledgeable duck people who will be able to give you advice and support for your duckling. They have literally saved the lives of some of my runner ducks.
Welcome to BYC, where I hope you find all you need for you and your duckling!