Bøker utgitt av Sarah E. Steinberg and Rowena Zahnrei

Meet sibling sleuths Nicki and Ricky - and the mysterious birds in their neighborhood - as they embark on scientific explorations to solve natural mysteries.This volume collects the first three books in the Adventures of Nicki and Ricky series: THE MYSTERY OF THE SHELL TREETHE HUMMINGBIRD CONUNDRUMand THE CASE OF THE DUCK'S TEETH in a special hardcover edition.