What is the ruling on slaughtering birds for breeding and adornment, when they may have chicks?

The questioner: Chicks and eggs on the tree.

The Shaykh: So, slaughter them all and eat them all.

The questioner: No, not for eating, O Shaykh.

The Shaykh : If it were.

The questioner: For breeding and adornment.

The Shaykh : There is no objection.

The questioner: For their sound.

The Shaykh: Yes.

The questioner: And there are chicks and eggs underneath, meaning.

The Shaykh: Yes.

The questioner: Even if they are underneath in their nests.

The Shaykh: No, here mercy comes.

The questioner: Yes, do you see here why I am asking you?

The Shaykh: Yes.

The questioner : May Allah reward you with good.

The Shaykh : And beware of that.

The questioner: Pray for us, O Shaykh.

The Shaykh: Successful in all good.

The questioner : May Allah bless you.

The Shaykh : How are you?
The student: How are you, O our professor? May Allah grant you health.

The Shaykh: This is what I told you about.
The student: This is what I told you about, O our Shaykh.
Another student : More than the distance between al-Safa and al-Safa.

The Shaykh: No, my brother, the space is a thing... like what book is the... .
The student : ... .

The Shaykh: Give it to me.