Marsh and Ward’s quick tour of the Sonoran Desert introduces readers to both local fauna (such as the horned toad, javelinas, tarantulas, Gila monsters, roadrunners, and scorpions) and flora (palo verde, ocotillo, saguaro, and prickly pear). Their observations are set to the rhythms of “Over in the Meadow,” for this is also a counting book: “Way out in the desert where the wildflowers grew/lived a mother hummingbird and her little hummers two.” Spengler has hidden each of the numbers in his full-page illustrations, which transport readers right into the thick of the environment and provide a better sense than the text of the animals and plants of this habitat. A glossary at the end of the book provides a more detailed account of the creatures. (Picture book. 3-7)