Author Doreen Cronin has a silly sense of humor, as seen previously in books like "Click, Clack, Moo" and "Diary of a Worm". She has used that same silliness to create "The Chicken Squad", a series of early chapter books featuring 4 crazy chicken sisters who like to solve mysteries. In this book, there is a new box in the backyard that holds a mysterious, possibly dangerous, creature. The sisters need to find out whether it is friend or foe. Eventually they do, but along the way there's adventure, intrigue, lots of miscommunication, and humor.