You are not permitted to download, save or email this image. Visit image gallery to purchase the image.
Despite both girls adopting a Minnie Mouse disguise, they failed to blend in with the sanctuary’s bushy backdrop.
Ecosanctuary general manager Chris Baillie said the event was a "roaring success".
"We have never had so many people in the sanctuary at one time."
The sanctuary’s wildlife, including takahe and tuatara, were not concerned about the 350 visitors because they had plenty of bush to hide in, she said.
Visitors were invited to explore the sanctuary’s many tracks and watch takahe being fed.
The open day was a collaboration between the ecosanctuary and Cooke Howlison Toyota.