May 5th
Good morning everyone, Emiliano!
When the nest is abandoned in late summer, I will also take the time again and review everything and read it up. 
When you said it, I remembered spontaneously: on March 16, I wrote that there seems to be a Goshawk who seems to like the nest / tree. Without having to visit or care for the nest directly.
However, he was often in the tree, calling ... sometimes only the quiet rustling could be heard. H21 is a 'little' heavier and not as gallant in its movements. I think we would have noticed her presence through her loud movements in the tree. C86 was already busy with his breeding at the time. (Do I remember correctly?) In retrospect, there was no reason for him to concentrate on this nest. So there is a possibility that H44 was already the noticed (unseen) Goshawk at this point in time. At this point there were also many annoying signs for days from the crows trying to drive the Goshawk away. All other adult Goshawk were probably just passing through curiously.
04:47:58 A quiet 'gjak' from H44, it sounds close.
H21 still has the head under the wings.
05:11:35 - 39 H44 calls again from the area, bright.
05:12:40 - 46 too, but closer
05:15:25 - 30 He tries to lure H21 into the day.
Although I thought for a moment that he might be a little excited, angry.
H21 is not moving. She just moves her head in the direction of the calls.
05:15:31 H44 is now directly on the nest tree. Both give short, soft tones.
05:16:11 H44 jumps to the lower branch in the pixel area.
05:16:17 then to the nest H21 now gets up, brief handover and she leaves the nest, calls.
