Do birds wee? ( sort of light hearted - so I don't seem really dim)

[Sibsmum]

I have been wondering. I mean we occasionally get bird poo on the car or on the Windows ( usually straight after they have been cleaned) but do they wee?
Have I been walking around for years and just been incredibly lucky to have escaped avian urine!?
Maybe they only see when it rains and then we might never realise....

The Ornithine Cycle sounds like a Prog Rock band.

And their difficult second album would be called 'Guano Pluviatum'.

We noticed a baby pigeon suddenly appear on our drive a couple of weeks ago. It was dead and surrounded by ants and flies and other various hungry bugs. It hadn't been there the previous day, it was gone without a trace the next day, so that's your answer: if they're alive, they're flying or safe in the nest; if they're dead, they fall and get devoured almost instantly.

Can I please jump in here and ask what happens when birds die? You never see dead birds anywhere unless a cat etc has attacked them. There's so so many yet one never falls from the sky, or from a tree etc. Been curious for years.

I have seen birds just dead on the ground.
Maybe street cleaners pick them up in towns, but I've seen them.

There's so so many yet one never falls from the sky, or from a tree etc. Been curious for years.

They certainly do fall dead out of trees, for example we saw a dead fledgling blackbird on the ground under a local oak tree a day or two ago.

In the countryside the scavenging wildlife makes pretty quick work of any corpses.