My pair of cockatiels, their aviary, their first reproduction

Hello community, it is with great pleasure that I make this post.
I've loved cockatiels for many years and it was by chance that I discovered these magnificent flying friends.
One day I was driving by and I saw a cockatiel on the side of the road, I asked my father to stop the car, I picked her up and took care of her until unfortunately she passed away a few years ago.
Since that time I have always had this passion for cockatiels, which led me to build a vivarium for them.
This couple in the images has been together for over a year and I was already losing hope that they would mate and that one day I could have cockatiels from this couple.
Almost a month ago I noticed that the female and the male entered the nests that I placed, but little by little I observed but it seemed that the first egg never came, I wasn't even sure if they had laid it or not because I didn't see the mating act.
After a few days I noticed that although they initially entered one of the two nests they only used one and that was when I looked and to my surprise I saw the first egg.
It was a very exciting feeling, a few more days passed and more eggs arrived.
Curiosity grew until one day I caught myself peeking into the nest and saw my first cockatiel chick so cute inside, it made me feel a mix of emotions, happiness and euphoria, it was my first cockatiel chick that had been born.
Now I just have to wait a few more days and see if more are born.