(I wasn't sure where to put this, but I did want to pass on the information I got at the vet today)
When I got up this morning, I noticed that Artemis was a little fluffed up, and I sat there watching her, kind of begging her to unfluff, because fluffy birds make me uneasy. Then she pooped clear mucus, and I went into crisis mode. Google didn't tell me anything, and Artemis continued to poop water. I looked at her vent and it was kind of wet, and she was scratching and picking at it. I made a call to the nearest avian vet, and they advised me to take her in. So we drove an hour to the vet.
The vet had a thought that she was trying to lay an egg, and I found out that my Lacey may or may not be a boy (!!?). But he took her out and didn't feel an egg in her tummy, so we have concluded that she had water poops from eating too many carrots and spinach. The vet told us to replace the spinach in her diet with kale, and give half as many carrots as we had been giving them, at least until she starts feeling better. He said that carrots are full of water, and parakeets can eat too many and get too much water in their diet, which can lead to them only having urine. Since I didn't see that during my searches this morning, I wanted to post it here so that if it happens to someone else's bird, they won't freak out like I did.
Both my birds are doing well right now and Artemis is expected to be totally okay
The signs of egg laying are very obvious, laying hens don't poop clear water, they make poops which are massive in size and have a more flattened out appearance. Looking for swelling at the vent area is also a good indicator.
My flock will feast on carrots and the only side effect is their poops turning an orange colour. From what I know, leafy greens have a higher water percentage when compared to carrots.
I'm glad your budgies are doing well. In case you don't know when moulting, budgies can have slightly watery poops and you can also notice a slight decrease on energy levels.
EDIT: I have moved your thread from the Diseases and Illnesses to the Your Budgie's Health section.
RIP sweet Tito (Summer 2008 - January 17th 2013).
You are missed and never will be forgotten.