POOP of Doom (Cowboy and Birdbrain #2) by Adam Wallace

IFFY DELIVERIES 
URGENT DELIVERY! 

To: Mr Herman B. A. Lone
WARNING: DO NOT break the package!
         VERY FRAGILE!

Who would you trust with the most delicate delivery ever? Not the WACKIEST deliverers EVER . . . unless their job depends on it . . . 
Join COWBOY and BiRDBRAiN on their WILD adventure!