What does this weird coturnix noise mean?

[ButtonNomies]

Is it just me or does he look extremly content and adorable

He likes to burrow ... hes always hiding on me somewhere, I'll occasionally get pecked by surprise if I stand up n forget hes hidden down my top so he pops out n pecks me to remind me hes a lil toerag

 

[Nabiki]

She sounds like a tea kettle:

That's definitely egg song.

 

[007Sean]

That's definitely egg song.

X2