bird poo and not bird pee?

Birds don't wee. Their bodies have adapted to be as light as possible- in every single way. Their bones are quite hollow for example, and they have evolved not to have a bladder- as a bladder full of urine would be too heavy. So the nitrogenous waste they produce has little moisture and is excreted with the poo from the same opening. It has the same contents of urine (except the water), and when you see a bird dropping it is the white part.

Birds really are light as a feather. Their reproductive organs shrink when they are not breeding so as to reduce weight, and some birds even lose brain cells to make them lighter- regrowing them again when it is time for them to migrate or something so they are clever enough to find their way.

Birds don't pee. Since their poo is liquid-like, there is no need to pee since the liquids in their body are already in the poo. Learned this the hard way.

The pee is in the poo

Birds only have one hole, so everything comes out mixed together.

Birds don't urinate like we do. The waste products that we would pass in our urine are disposed of in their droppings. The white liquid stuff contains those waste products.

It's all mixed together, think that's why it seems to weld itself to your windshield! Im telling you those seagulls must eat some crap !

well i have two birds i've never seen pee wich is weerd

No they don't. it's mixed in with the poo.

you get a double measure when they hit you..

birds do not pee

they do both at the same time. their insides are too delicate for any particularly tough bowels.