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But last August three dolphins from the Brookfield Zoo in Chicago traveled to Minnesota, and were slowly introduced to Spree in her own habitat.
"What we wanted Spree to get into was a situation where she could get around animals of a similar age," Diane Frusco, a marine mammal supervisor at the Minnesota Zoo, told the Sun-Times about a plan they hatched with the Brookfield handlers. "The theme we were trying to get across was that you are a group of animals and you are a team,” said Frusco.
After months of social interaction, the pack traveled back to Chicago -- aboard a FedEx chartered plane, no less -- where they will be on display at The Brookfield Zoo at the end of May.
Spree’s introduction into the group was not only to nourish her social side, but also to help her learn mothering skills.
"She is a very important part of our breeding program," said Rita Stacey, Brookfield Zoo's curator of marine mammals .