Sibley Birder's Trivia: 400 Questions to Test Every Birder's Knowledge bird diary sea lions and walruses are

sea lions and walruses are not related to whales

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Sibley Birder's Trivia: 400 Questions to Test Every Birder's Knowledge bird diary sea lions and walruses areA game for birders to test their knowledge with 200 cards offering 400 questions of varying difficulty about the birds of North America from the bestselling author and ornithologist David Allen Sibley. True or false: Many dinosaurs (the ancestors of modern birds) had feathers. If you answered "true," you just won a point playing this ultimate ornithology trivia game. Sibley Birder's Trivia offers 400 questions that will test your bird knowledge over