Hola Beria, eso solo aplica en casos muy particulares. En la mayoria de los casos, el bebe obtiene la ciudadania
(2) Paragraph (1)(a) does not apply to a person if, at the time of his birth, neither of his parents was a citizen or lawfully admitted to Canada for permanent residence and either of his parents was
(a) a diplomatic or consular officer or other representative or employee in Canada of a foreign government;
(b) an employee in the service of a person referred to in paragraph (a); or
(c) an officer or employee in Canada of a specialized agency of the United Nations or an officer or employee in Canada of any other international organization to whom there are granted, by or under any Act of Parliament, diplomatic privileges and immunities certified by the Minister of Foreign Affairs to be equivalent to those granted to a person or persons referred to in paragraph (a).
No soy abogado ni consultor de inmigración. Respondo en base a mi propia experiencia y conocimientos (y Google!)