In this snooze-time, count-down rhyme, ten lambs, each identified in Gaber’s cozy, twilit scenes by a differently colored neck ribbon, gambol about farmyard and fields, nodding off one by one until the last one comes back to Mama: “ ‘Mama, I can’t sleep.’ / ‘Hush,’ says her mama. / ‘Have you tried counting sheep?’ ” The murmurous rhythms of Root’s rhyme, the soothing serenity of Gaber’s art, plus smooth verbal and visual transitions between spreads make this invitation to dreamland as hard for wakeful lambs of the two-legged variety to resist as Jane Dyer’s Lullaby Moons and a Silver Spoon (2003), Ruth Louise Symes’s Sheep Fairy (2003), or other bedtime reading that features the ever-popular woollies. (Picture book. 3-6)