An owl, a butterfly and a meerkat - find out what they do when the sun sets in At Sunset. The fiction book that accompanies this title is A Picnic at Sunset. Oxford Reading Tree Explore with Biff, Chip and Kipper is a series of paired fiction and non-fiction books linked by curriculum-related topics. Each pair consists of an engaging story featuring well-loved characters and a compelling non-fiction book. These topic-linked pairings will develop and deepen their reading comprehension and foster a love of reading across both text types.