some animals from the house

Today is my first post in this community and I introduce my beautiful cockatiel couple that I love so much.
They haven't bred yet, they are very friendly animals, the male is around 11 years old and the female is younger, around 4 years old.
I still don't know if I will be able to have breeding or not but they have been very close to each other in the last few days.
The male has entered the nest but the female has only stayed at the door we will see if they enter or not and if I will have small cockatiels soon.
I started only because when a few years ago I was driving but my father saw the male cockatiel in the photo along the road, we didn't know if he had fled the nest or not as no one came with us we stopped the arro and started to take care of him however this love for this species it grew until I made a large aviary for them to be.
Do you also have cockatiels or do you like this species?
Do you think that even with the difference in age they will still mate?
I would like to have your opinion in advance, thank you friends.