Strawberry finch's nest

 A few days ago,
three new babies were transferred to another nest.
 

 A nest is made in a plant box located in balcony,.
Where exactly is the nest?
 

Where's the nest?

 

Once you clear some ivies, You can see the nest.
 

The entrance of the nest is covered by Parrot`s white feather.
I put my hand in and noticed the size of the nest was about the size of an egg.