Karl's New Beak

January 1, 2019
Using a 3-D printer, zoo employees construct a prosthesis for an injured bird. At the Smithsonian's National Zoo in Washington, D.C., staff members are concerned with the feeding difficulties of Karl, an Abyssinian ground hornbill living in the cheetah exhibit. Hoping to restore his ability to eat normally so they can breed him, they come up with a solution for his broken bottom beak. They mend it using a pattern from a museum skeleton and 3-D printing technology. A number of recent titles for young readers describe the work of humans to make lives better for injured or abandoned animals. Unusually, here the special focus is on the process: the complicated and painstaking repair of Karl's lower beak, including the construction of its replacement part. Thoughtful design makes this very clear: Illustrations cleverly combine actual photographs with drawings and diagrams, printed in blue and white like blueprints. Readers see Karl in his enclosure, before-and-after close-ups, and the veterinarian, exhibits specialist, and exhibit curator (all white-presenting) who work together to restore the beak. There are also photos of the printing process as well as sanding and gluing the new bill. The straightforward text introduces the bird, explains how hornbills use their beaks in the wild, and follows the process step by step. Backmatter includes more facts about hornbills in the wild and about Karl in particular as well as a glossary with unusually helpful definitions. For fans of animal-rescue accounts and 21st-century technology. (Informational picture book. 5-9)

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January 1, 2019
Grades 2-4 When Karl, an Abyssinian ground hornbill, first arrived at Smithsonian's National Zoo, he had a problem. The front portion of his lower beak had worn away, making it difficult for him to eat, drink, and do the things a gentleman hornbill needs to do to attract a mate. Luckily, the zoo's vet had an idea to help the poor bird. Using a beak from the National Museum of Natural History as a model, he and other zoo staff got to work on designing a prosthesis for Karl that could be made with a 3-D printer. Soon, Karl's beak was as good as new, and he was back to chasing bugs and meatballs. Ah, the good life. This uplifting animal story features precise, accessible writing, excellent illustrations (a mix of photos, sketches, and 3-D computer renderings), and STEM connections galore. The text highlights the cross-disciplinary teamwork that went into designing Karl's new beak without ever bogging down the text with obvious lessons. Kids will undoubtedly find this account of science, nature, and compassion fascinating.(Reprinted with permission of Booklist, copyright 2019, American Library Association.)

May 1, 2019
Karl, an Abyssinian ground hornbill, lives in the National Zoo. He arrived with a damaged lower bill, which limited his ability to eat a balanced insect diet and participate in the hours of activity normally associated with hornbill eating. Nargi's lighthearted and informative account shows how zoo staff engineered a solution for Karl: a 3-D printed beak. Each step in the process?from finding a preserved hornbill skull in the Smithsonian's collection, to using computer programs to scan and shape the prosthesis, to attaching it to Karl?demonstrates how engineering and science can be combined to solve problems in animal conservation. Creative illustrations combine blueprint-like schematics with photos of Karl, other members of his species, and the technicians and tools used to create his new beak. Part of Capstone's Encounter series of narrative nonfiction picture books with 4D (i.e., a downloadable app), this volume's sturdy binding and series nonfiction look make it approachable for a variety of readers. danielle j. ford

(Copyright 2019 by The Horn Book, Incorporated, Boston. All rights reserved.)

July 1, 2019
Karl, an Abyssinian ground hornbill, arrived at the Smithsonian's National Zoo with a damaged lower bill, which limited his ability to eat a balanced diet and participate in normal activities. Nargi's lighthearted and informative account shows how zoo staff engineered Karl a 3-D printed beak, each step in the process demonstrating how engineering and science can solve problems in animal conservation. Creative illustrations combine blueprint-like schematics with photos; a downloadable companion app is available. Glos.

(Copyright 2019 by The Horn Book, Incorporated, Boston. All rights reserved.)