At 16:39 or so the feeding ended. No pictures from me this time as I was eating myself
But I observed the following:
Nori was again the first to position himself for the feeding, thus getting the first bites from Piret. Elo then moved next to Nori without being too agressive and tolerated Nori there. Piret then started to feed Elo, but every now and then she gave Nori too. Nori was still in the same place, but moved his neck and head further from Elo, only to move it fast towards Piret each time he was offered a bite, and retreat his head even faster. Elo then raised his head, a clear sign for Nori to back off. Nori retreated and Uno took his place, and got fed. When Elo and Uno were satisfied, Nori moved in again and got a few bites more, including bits of fish spoiled by the other 2 previously that session which Piret picked up and fed him.
16:54 - Madis delivers a small fish. Nori gets a few bites again, but the other chicks want too. Nori is again very fast stretching his neck to the food, and retreating it even faster as soon as he gets something. The other 2 chicks don't seem too interested in food right now, so Nori gets his share.
17:00 - something attracts the attention of the chicks, they all look into the same direction, following with their heads (Nori also seems to have some down in his beak. His own or did he peck at someone?):
Piret observes it too, but doesn't look too bothered by it, and keeps feeding Uno. Nori still looks at what's happening in the air, just as Elo does on the other side of Piret:
17:12 - Uno is satisfied again, and Nori takes his place and gets food. Elo gets some bites too, but most is for Nori.
17:16 - Elo snatches the tailpiece (whis wasn't too big) and swallows it. Then Elo picks up some spoiled bits from the nest, and surprisingly Nori tries to 'steal' those from Elo's beak, three times in a row, but without succes. Nori then gives Elo a very dirty look, and Elo moves away... That's interesting, Nori growing some balls again, and developing new tactics.
Unfortunately I was too slow to take a screenshot of this behaviour by Nori, but I assume others have seen it too.