Aaww, poor little thing 
I almost got a peacock today
... but I didn’t know where I would keep it
... I’m gonna have to research that 

I almost got a peacock today
... but I didn’t know where I would keep it
... I’m gonna have to research that 
you should have!!

...I don't think it's 'failure to thrive' , I just don't know what it could be? On the other hand you're quail are looking good and healthy.
Well wait until at least day 10 before removing any eggs.

