and down
1/ It seems to me, male hasn't get on top of the female’s back and I don't saw her tail aside
2/I don't see the "cloacal kiss" - they copulate by briefly touching genital openings for sperm transfer, what is called a "cloacal kiss" (male birds don't have penises)
- failed copulations are common; young pairs are less likely to copulate successfully than old pairs
The brief rubbing of cloacas may last less than a second, but the sperm is transferred quickly during this "cloacal kiss" and the mating is complete. The balancing may take longer as the birds stay touching one another, and several "kisses" might occur within a few moments. (
https://www.thespruce.com/how-do-birds-mate-386108)