Two stars for the concept and idea and artwork, but one star for the actual content. It's not the author's (or editor or whatever) fault. The riddles themselves just kind of suck. I think that knowing an exact type of bird isn't something most people know; the riddles where objects were the answer were more interesting. But they didn't always make the most sense, at least not in an obvious way. To me, puzzles and riddles should have that "a-ha" moment, but some of these didn't.