1. A transgenic bird containing a transgene containing a glycosyltransferase coding sequence, wherein the tissue of the transgenic bird's oviduct produces a protein comprising an N-linked oligosaccharide containing at least one saccharide, where the oligosaccharide will not contain a saccharide in the absence of a transgene. ! 2. The transgenic bird according to claim 1, in which the glycosyltransferase is N-acetylglucosaminyl transferase. ! 3. The transgenic bird according to claim 1, in which the glycosyltransferase is N-acetylglucosaminyl transferase 3.! 4. The transgenic bird according to claim 1, wherein the oviduct tissue is magnum tissue. ! 5. The transgenic bird according to claim 1, in which the tissue of the oviduct represents the cells of the tubular gland. ! 6. The transgenic bird according to claim 1, in which the cells of the tissue of the oviduct secrete protein in the presence of egg white. ! 7. The transgenic bird according to claim 1, in which the transgene contains LTR. ! 8. The transgenic bird according to claim 1, in which the transgene contains an oviduct specific promoter. ! 9. A method comprising isolating a protein produced by a transgenic bird according to claim 1. ! 10. The transgenic bird according to claim 1, in which the protein is exogenous to the bird. ! 11. A method comprising isolating an exogenous protein produced by a transgenic bird of claim 10. ! 12. The transgenic bird according to claim 1, in which the protein is a medicinal protein. ! 13. The method according to claim 11, in which the bird is a chicken. ! 14. A transgenic bird containing a transgene containing the galactosyl transferase coding sequence, where the transgenic bird's oviduct tissue produces a protein comprising an N-linked oligosaccharide containing at least one galactose, where the oligosaccharide will not contain galactos1. Трансгенная птица, содержащая трансген, содержащий кодирующую последовательность гликозилтрансферазы, где ткань яйцевода трансгенной птицы