Spring 2017

How Small Is a Hummingbird?

Cover: How Small Is a Hummingbird? Spread: How Small Is a Hummingbird?

Introduces the size of a hummingbird to readers through simple text, photograph, and measurement comparisons. Additional features include a phonetic glossary, index, sources for further research, and a Check It Out! section that supplements the main text with additional fun comparisons and facts about the topic.

Table of Contents

  • Note for parents and teachers
  • Beginning of text
  • Check it out!
  • Glossary
  • To learn more
  • Index



  • Dewey: 598.7
  • Graphics: Full-color photographs
  • Reinforced book (9781503816800): 8 x 8, 24 pages, © 2017
  • Hosted ebook (9781503818231): 8 x 8, 24 pages, © 2017
  • Subject: Language Arts
  • Series: Comparison Fun


  • Suggested Interest Level: Preschool - Grade 2
  • Suggested Reading Level: Grade 1
  • Lexile® Measure: 390
  • Guided Reading Level: M

BISAC Subjects


A Review of "Comparison Fun" in Booklist

The content of these playful books in the Comparison Fun series perfectly matches the series title. Each book uses a variety of often whimsical comparisons to bring to life one small corner of the natural world. Although many books make one or two such comparisons, they are the backbone of this series. The facts presented are often unusual, compelling, and illustrated clearly. For example, in How Big Is a Blue Whale?, a spread that compares the size of the whale’s heart to a small car shows a picture of the whale with a yellow compact car superimposed over the heart’s position. How Slow Is a Sloth? points out that a sloth takes six seconds to crawl the length of a pencil (pictured) and one minute to climb the height of a door (pictured). In How Small Is a Hummingbird?, we learn that the tiny birds are only as long as two bumblebees, and side-by-side photos show that length. In How Strong Is an Ant?, readers will grasp that these minuscule insects are mighty, though the comparisons are sometimes convoluted, including several variations on ‘If ants were the size of humans’ or ‘If a human was as strong as an ant.’ The books also provide teaching notes, but they feel superfluous in the face of such engaging material that speaks for itself.


Author: Kurt Waldendorf

Kurt Waldendorf is a writer and editor. He lives in Vermont with his wife and their Old English sheepdog, Charlie.


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