Caspsita! I really like this one! Is your first name Molina? You have plenty to be proud of here. Good light under the bellies again. Lots of space for the birds to fly in. I wish there was a little separation in the two top birds. A very well seen capture.
I like this one best! The birds seem sharper, the light is very nice, and they're coming toward the viewer, which leads to the viewer paying a little more attention. (We'd say it "engages" the viewer more -- sorry, but I don't know the Italian translation. Maybe someone else could help.)
I'd love to see the one where the two are separated.
None is quite "perfect" -- most people would shot many, many shots of a group (or groups) in flight before getting one with all the birds just right. But you did a good job with what the birds gave you to work with.