The birds did not understand a single word of what he was saying, but that made no matter, for they put their heads on one side, and looked wise, which is quite as good as understanding a thing, and very much easier.
Archaeopteryx probably cannot tell us much about the early origins of feathers and flight in true protobirds because Archaeopteryx was, in the modern sense, a bird.
I have read in books that we are called 'caged birds'. I cannot speak for others, but I had so much in this cage of mine that there was not room for it in the universe- at least that is what I then felt.