2006-08-14 03:01:03 · 21 answers · asked by Anonymous in Pets ➔ Birds
Birds excrete their nitrogenous wastes, derived mostly from the breakdown of proteins, in the form of uric acid rather than urea as mammals do. Unlike urea, uric acid is almost insoluble in water, and is excreted in the form of crystals that form a semisolid white paste. Not needing to store liquid wastes, birds lack a bladder. Instead urine passes from the ureters into the cloaca, a common chamber for the passage of digestive and urinary wastes, as well as for reproductive products. A bird dropping usually contains both white uric acid crystals, and a concentrated mass of digestive wastes such as insect cuticle or seeds.
Most aquatic vertebrates excrete nitrogenous wastes in the form of ammonia, which is highly toxic but very soluble and easily gotten rid of if water is in ample supply. Uric acid excretion may have first developed in the first vertebrates to evolve shelled, fully terrestrial eggs. Such eggs must retain the waste products produced by embryonic metabolism within the shell until hatching. Toxic, soluble ammonia would soon poison a developing embryo, while non-toxic, insoluble uric acid can simply be stored inside the shell as long as necessary. In developing live birth, mammals may have switched to back to a more soluble compound, urea, so that embryonic waste products could be diffused into the blood stream of the mother and thus excreted.
2006-08-14 03:07:35 · answer #1 · answered by BookLovr5 5 · 9⤊ 1⤋
Do Birds Pee
2016-10-04 11:26:16 · answer #2 · answered by ? 4 · 0⤊ 0⤋
This Site Might Help You.
RE:
do birds pee?
2015-08-18 00:05:28 · answer #3 · answered by Anonymous · 0⤊ 0⤋
Birds only pee/poop. It all comes out the same spot. That's why bird poop is all runny. It has the "pee" mixed in.
2006-08-14 03:06:39 · answer #4 · answered by Sherry 4 · 3⤊ 1⤋
Yes, but not in the way that most animals do.
Birds excrete the urine (pee) and the feces in the same "dropping." The white color one sees in the dropping is the urine, and the dark colored matter is the fecal matter.
2006-08-14 03:13:52 · answer #5 · answered by froggie 4 · 4⤊ 1⤋
All living things pee
2006-08-14 03:11:44 · answer #6 · answered by keℓsey<3 4 · 1⤊ 8⤋
It's sort of a combination pee/poop.
2006-08-14 03:13:34 · answer #7 · answered by Jeni A 1 · 0⤊ 3⤋
The white streak in the birds droppings is urine. Same as in lizards.
2006-08-14 03:27:07 · answer #8 · answered by Jenn 3 · 4⤊ 1⤋
Not exactly
When birds defecate their urine comes out at the same time.
its all done at once
2006-08-14 03:29:34 · answer #9 · answered by fatwhale90 4 · 2⤊ 1⤋
No and yes...... Their excrement is all in one. That's why it is runny. They do both at the same time. So technically, no, but really, yes.
2006-08-14 03:08:59 · answer #10 · answered by bugear001 6 · 2⤊ 1⤋