Explore Ulva Island Bird Sanctuary with Ulva's Guided Walks on Stewart Island, New Zealand. Ulva's Guided Walks was named by the owner, Ulva Goodwillie - who just happens to be named after the Island. Ulva is a direct descendant of the first Māori peoples of Stewart Island and is passionate and very knowledgeable about this special place. Ulva and her team of local guides would love to share their experience with you.