BILLINGS — Emus are making their first-ever appearance at MontanaFair, and they have one Worden girl to thank for it. Watch Delilah and her mom talk about the emus:Worden girl brings emus to MontanaFair for the first time"We just wanted to be different and show a different animal that nobody's ever seen here," Delilah said. But adding emus required months of extra preparation. For the past six months, Delilah took the birds just about everywhere to get them ready for fair life — including trips to parks and Lake Elmo, where she discovered emus can swim. For those wondering what emus are used for, Chantal has answers.