Loose Stool

One of my parakeets has chronic loose stool. Her vent is always clean and she behaves normally. But in the morning her poo pile is kind of a loose mass and there is a wet ring around the poo pile. You can see formed poo it's just loose.

This has been going on for months.

Today I saw another loose poo pile. I'm wondering if she might have a parasite or something that is spreading.

If I was flush I'd just take them in but I'm really really short on cash now. And they are acting fine.

I do think that the first hen's loose poo also started when she went into breeding condition. I'm not sure though. My second hen is now going into breeding condition. Can that cause loose poo?

Finally, are there any safe home treatments I can try on them?

Thanks for reading.

Summer