What does the crow know and what does it tell us about brain size, the evolution of intelligence, and which is the smartest creature on the planet? “Ask the Author” section. Selected bibliography. Index. Full-color map, illustrations, and photographs.
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[STARRED REVIEW]
This title takes readers to New Caledonia, where, as Turner puts it, “the forests are lush and the crows are geniuses.” Comins’s photos supply ample evidence of both. Under the guidance of crow researcher Gavin Hunt, expeditions to the island’s wilds provide opportunities to watch the local species of crow display the astonishing ability not only to use found sticks to dig grubs from logs but also to make their own hooked tools from twigs or the jagged leaves of the pandanus—and to train a juvenile crow in the technique. Then later, under controlled conditions in a lab, captive crows (which are carefully returned to their home territories afterward) beat out groups of four- to seven-year-old children in performing feats of mental activity to get at an inaccessible treat. The author also surveys tool use by other wild animals, from chimps to crocodiles, and, with added art by de Filippo, compares the structures of crow and human brains. She closes with more anecdotes about corvid intelligence and leads to further information. VERDICT Required reading for anyone who believes that we are the only, or even the most, sapient species on the planet. Highly recommended for STEM and animal collections.—John Peters, Children’s Literature Consultant, New York City
[STARRED REVIEW]
Turner’s latest Scientists in the Field entry returns to the fascinating topic she
explored in The Dolphins of Shark Bay (rev. 1/14): the behaviors of highly intelligent
nonhuman animals that use tools. This time, the focus is on the super-smart
New Caledonian crow. Many species of crows across the world exhibit advanced
behaviors, but this species of crow is one of the few animals that actually make their
own tools. These crows bend sticks into hooks and shape pandanus-plant leaves
into barbed probes, the better to gather grubs from crevices in rotting logs. Turner
joins scientist Gavin Hunt in New Caledonia to learn about his research on crow
problem-solving and the evolution of crow tool-making, and carefully steps readers
through the inventive experiments that test and confirm the crows’ ability to think
through complex tasks. Turner’s friendly, sometimes joking tone effortlessly moves
from amusing accounts of crow antics to sophisticated explanations of crow and
human evolution. Comins’s arresting photographs of the sleek black birds in the
island landscapes of New Caledonia highlight their personalities and intelligence. In
an appended Q&A section, readers can learn more about Turner’s volunteer work
with American crows; the back matter also includes extensive resources for further
learning and an index. danielle j. ford