Leslie Bulion, a virtuoso science poet, has created a portrait of the rainy season on East Africa's southern Serengeti Plain, offering young readers a compelling look at an ecosystem in motion. Using a series of interconnected verses inspired by an East African Swahili poem form--the utendi--Bulion's cadences and rhythmic lines mimic the web of life in the Serengeti, following the great migration of wildebeest, zebras, and others into and then out of the vast short-grass plain. Lush, evocative gouache illustrations by Becca Stadtlander showcase the grandeur of this immense and complex ecosystem and provide close-up details of its wildlife inhabitants. Scientific notes on each spread and comprehensive back matter material offer more specifics. This, paired with Bulion's brilliant poetic form, make the book ideal for cross-curricular learning.