How does a birb manage to lay a runny deuce down a vertical window with zero perch space above?

#Impressive

@book They have no sphincter muscles, the cloaca just releases when it needs to release on a bird... even if in mid flight.

Think of it more as a bombing run.

@Anomnomnomaly I would understand that if true, but they must have been pilling some serious BANK ANGLE for the physics to all equal out.

@book

ooOOOoo A physics question.