This large format book has beautiful pictures and large text, and has a selection of very interesting birds. While the factoids about individual birds may have been chosen somewhat at random, it is still a good collection, which will help a child understand how interesting and diverse birds truly are.
The problem is in the contents of the text. There are two problems. The first is teaching information that is purely speculation instead of teaching children to question, and to use the scientific method. The second is that the factoids are not always accurate, or are worded in an ambiguous way.
There is a "centerspread" regarding Darwin's finches. Several finches are featured, with photographs showing different beaks. The preferred food of each bird is discussed with relation to the shape of the beak. So far, so good. But the text then goes on to claim "evolution" without even defining what it means. The word "evolution" basically means "change" and the changes in a bird's beak are certainly changes. What has recently been discovered is that things like the shape of the bird's beak is often determined by what food is available rather than by pure genetics. The genetic material in the bird is able to adapt by forming different shaped beaks to meet the available food supply. It has been discovered that finch beaks revert when the food supply changes back to what it was. It would have been sufficient to note that a finch beak will change shape to take advantage of the food available. While it is not clear to me that the shape will change in an individual bird, it certainly would change with the offspring. I have learned from personal experience that things like the color of a bird's beak change for one reason or another. In general, the book makes numerous references to "evolution" without really ever explaining anything. Since most evolution is pure speculation anyway, this is not particularly informative for a child. Furthermore, the book seems to rely on the system of taxonomy to decide what is "related" to what, when in fact, many of these relationships are based simply on where the discoverer of a species chose to place that species in the system. Keep in mind that "evolution" can have several definitions, and known examples of evolution WITHIN a species is commonly and deliberately compared to evolution from slime to man, a fallacy known as "equivocation". While finch beaks change shape and function, the finches remain finches.
Other than that, the book often makes confusing or erroneous statements. For example, it says that colors in bird feathers are due to pigments. Well, yes and no. Some feathers have the capacity to create color directly from sunlight without pigments. The book later makes the statement that the color in bird feathers is due to iridescence, which is says means it is colored like rainbow. This isn't accurate, either. When a bird feather alters sunlight, it will produce, usually, only a single color. The feather's pigment is black. The most widely known example of this is the gorget (throat) of a hummingbird, but there are other birds with feathers that will refract only part of the spectrum, producing pleasing colors.
On another page, it implies that the ostrich egg is the largest bird at 3 pounds, while later it shows a photo of an egg from an elephant bird, which is considerably larger and holds 2 gallons of material, which would weigh in excess of 15 pounds. Since people widely believe that the ostrich egg is the largest bird egg, it would be wise to clarify this point.
In describing the development of a chicken egg, the text says that the fertilized egg divides to form a ball of cells. That explanation is rather poor, in my estimation, since the embryo starts out as a tiny speck and grows from there. The egg yolk doesn't just suddenly split into embryo and remaining yolk.
I would probably give this book four stars, if there weren't so MANY instances of sloppiness in writing or presenting scientific evidence.
Overall, the book is probably worth reading to a child, but be prepared to correct mistakes. Be knowledgeable. So be careful about selecting this book for the purpose of educating a child. If you do decide to buy this book, buy it for the pictures. They are definitely worth seeing.