Everything in evolution is done through small adaptations. However, instead of being concentrated in a specific kind of animal, wings are commonplace not only among birds but also among most insects. There's no need here either for any universal grammar, or for language organs. The issue becomes muddled a bit because of complexity. It is not only the ability of language that is important, it is also the society in which it is used.
Language demands large and complex brains, but it also demands a community of users and speakers.
In order for this to happen, it is also necessary to develop phonologically sophisticated apparatuses, able to utter enough variations to support complex linguistic expressions. It may be reproduced for individuals and for educational purposes only. All Rights Reserved.