Did you ever wonder which animals are the biggest... and the smallest?Birds can be found in all shapes and sizes! Did you know a bee hummingbird weighs less than a penny? Or, that an ostrich can weigh as much as a refrigerator? What do these animals look like and where do they live? Look inside to discover which of the ten birds in this book are very small and which ones are really big!ABOUT THE SERIES: Kids can't get enough animal facts! Starting with the smallest animal in each group -- amphibians, birds, fish, mammals, and reptiles -- readers will want to read to the end as the ten animals listed get bigger and bigger. All the books in this brand-new series brim with colorful photographs and fascinating facts about the featured animals body, diet, and habitat. Short blocks of text entertain and explain why some animals are very small while others are really big!