Konrad - thanks a lot for your careful analysis of the nest's structure! I didn't know - and maybe there were others as well, who didn't know the things you mentioned in the post
Early morning was wonderful! The eaglet is so active from the very beginning of daylight hours, when it's not too hot in the nest, but it's pleasant and there's a lot going on in the surroundings. Once again I have loads of screenshots from the morning but will have to make a compact post of them in order not to invade the forum with old material