In this prehistoric tale, a misfit hatchling from an abandoned egg ends up saving his family."Edna the very first chicken was hatching her very first eggs." Her seven eggs hatch, and Ankylosaurus, Parasaurolophus, and Triceratops gather to admire her chicks. The dinosaurs point out another, speckled egg. It isn't Edna's, but she decides to take care of it anyway. After all, "one more baby won't make any difference." Famous last words. Unlike Edna's other babies, Sinclair is a feathered dinosaur with "long, sharp teeth and claws instead of wings." The story humorously riffs on the fact that birds and dinosaurs are related in evolutionary terms, while the art makes it abundantly clear that Sinclair is no chicken. Still, though he has trouble pecking, fluttering, and clucking like the others, his family lovingly accepts him. Bernstein's illustrations have a loose, comical style that will mitigate readers' fears when a big, mean, fast, hungry Gorgosaurus makes off with two of Sinclair's sisters. All the chickens pursue the beast, but speedy velociraptor Sinclair catches up and rescues his sisters, who declare him the "BEST. CHICKEN. EVER." An author's note explains the science behind the story: Many birds do imprint on the first living thing they see, while paleontologist Robert Bakker has found evidence that velociraptors really did spend time in trees.Silly, with a dash of science. (Picture book. 3-6)