Your cockatiels should be at least a year old before you start breeding them to prevent ill offspring.
Swadesh become a father at age 43.
Cockatiel's are very difficult to age. You can only be accurate about their age if you've had the bird from a baby. The only way a cockatiel can be aged is as a juvenile, adult or senior.
Cockatiels do not become aggressive unless they are treated badly.
Just like with dogs they become a mix usually they are like white and then have grey spotches. :D I hope that helps ;)
I have five of them - it is typically through age and shedding, nothing more.
It's not recommended to have a cockatiel in your house with a child who's age is less than 5. Maybe you should wait a few more years.
She learned to shoot before the age of six from her father.
in the year 1815 he was 25 and was ordained a priest
He became a ruler at age 9 a few years after his father died
It varies from bird to bird but after a year the bird should have reached maturity.
The cockatiel is a type of Australian parrot.
Cockatiel females are fertilized internally.