Wa alaikumus salam...
What's koka, lol that's funny.
In one language it means stork..
I searched it up on the internet,
YES.
Bischofia javanica is the KOKA.
Confirmed.
Refer links in source which give information, to confirm.
EDIT: Was it the choice of the Prophets (pbut)
I have not heard about it, which hadith mentions so?
Oh, please tell me!
Koka is a name in Tonga Language.
It is the Bischofia javanica, the scientific name.
Click this: http://to.wikipedia.org/wiki/Koka
Look @ the chart in the left.
Salam. =)