Can someone explain the form of presumed excreta from this immature Magpie pictured in Townsville Town Common yest morn?

Great capture. . .
Sorry for the early reply from the "Could be" Crew, but from my work with Raptors, some of them squirt their droppings and some of them drop their droppings.
The liquid part of the excreta is the birds urine and is usually a milky color and the solid part (poo) is usually black or very dark brown. This of course will vary with different birds and their different diets, fruit eating birds are an example with their reddish colored mutes.
Without knowing anything about Magpies, I might humbly suggest that this bird is a squirter and the part of the mutes seen in the pic are the urine?
If I'm wrong, I'm sorry and you can hang and burn me by the stake. . .
Bruce

Tony, great timing for your shot.
Just adding to Bruce's comment, the white of the droppings is from the uric acid, as birds don't urinate.
Peter.

Thanks, guys. Can I rephrase? What parameters within fluid physics could lead to such a symmetry of shape(s) in the output. It's as if the bird were ejecting a string of cotton buds. I wasn't shooting at super speed, so the output wasn't exactly supersonic.

I need cues on pees!
Tony

Tony Ashton wrote: Thanks, guys. Can I rephrase? What parameters within fluid physics could lead to such a symmetry of shape(s) in the output. It's as if the bird were ejecting a string of cotton buds. I wasn't shooting at super speed, so the output wasn't exactly supersonic.

I need cues on pees!
Tony

Sorry Tony,
You're now above my pay grade. . .
Bruce