I'm sorry for not being able to come here often. I have learned a lot with your advices.
I've been away from home in business operations around Europe. In one of them, I've been able to buy IVOMEC, that is the name for Ivermectin in Europe.
My house keeper removed the nest right away you told me, luckily, no action happened!
However, yesterday, I came to check the most active female in this situation.
She is drooling, with millet around the beak. She stays in the bottom of the cage very puffed up and very still.
Any ideas of what this could be? Could it be the mites again?