The present invention relates generally to the fields of immunology andvaccine technology. More specifically, the invention relates to recombinanthuman adenovirus vectors for delivery of avian immunogens and antigens, suchas avian influenza into avians. The invention also provides methods ofintroducing and expressing an avian immunogen in avian subjects, includingavian embryos, as well as methods of eliciting an immunogenic response inavian subjects to avian immunogens.