Aha!  A new nugget.  It appears that even when CRT was filling this gap,  
he still tried to patch with original fabric where possible.  The 1977  
text has this:

'How do ye of uncouth race dare to ask aught of me, Elu Thingol, Lord of  
Beleriand, whose life began by the waters of Cuivienen years uncounted ere  
the fathers of the stunted people awoke?' And...he bade them with scornful  
words be gone..."

Now, the old Tale of Turambar has, slightly earlier, Tinwelint saying:

'Wherefore dost thou of the uncouth race of Men endure to upbraid a king  
of the Eldalie? Lo! in Palisor my life began years uncounted before the  
first of Men awoke.  Get thee gone, O Urin..."

I'm going to have to scour my text analysis anew, seeing if some of the  
gaps can be filled from the Lost Tales!

--
The Dodo never had a chance. He seems to have been invented for the sole  
purpose of becoming extinct and that was all he was good for.