my cockatiel constantly makes these noises, what does it mean?

[rezahoseini7150]

 

[Free as a bird]

Hi and welcome.
They look like happy little whistles to me, I think his developing his unique melody as male cockatiels often do

 

[rezahoseini7150]

Hi and welcome.
They look like happy little whistles to me, I think his developing his unique melody as male cockatiels often do

thank you I was worried he might be nervous, scared

 

[Mya the ringneck]

thank you I was worried he might be nervous, scared

he doesn't seem to be scared i think it is just him exploring his noises

He looks like a healthy pretty little bird.