As funny as the Amazon Drone Twitter account is, the best response to Sunday's big revelation that the online retail giant is developing delivery by unmanned aerial vehicles has to be from Waterstones.

On Monday, the U.K. bookseller announced O.W.L.S., the Ornithological Waterstones Landing Service, which will utilize owls to bring books to customers' doors. As Waterstones Press Manager Jon Owls (ahem) explains in the video below, "O.W.L.S. consists of a fleet of specially trained owls that, either working individually or as an adorable team, will be able to deliver your package within 30 minutes of you placing your order."

That would match the promised speed of Amazon Prime Air's drones (within a 10-mile radius of a distribution center), Waterstones may be a little slower in launching its service.

"Putting O.W.L.S. into commercial use will take a number of years as it takes ages to train owls to do anything," Owls cautions, "and we only just thought of it this morning."

When O.W.L.S. does take flight, Waterstones may find the skies a little crowded: The Verge reports that UPS, the world's largest parcel service, is also researching drones.