DucksHepatitis B Virus, DuckHepatitis Virus, DuckHepadnaviridae InfectionsHepatitis, Viral, AnimalPoultry DiseasesGeeseInfluenza in BirdsMardivirusChickensSalt GlandBird DiseasesInfluenza A Virus, H5N1 SubtypeDNA, ViralAnseriformesCloacaMolecular Sequence DataFlavivirus InfectionsVirus ReplicationArgininosuccinate LyaseBirdsAlphaherpesvirinaePoultryInfluenza A virusdelta-CrystallinsBase SequenceLiverHepatitis B virusParakeetsFlavivirusRNA-Directed DNA PolymeraseGenome, ViralQuailOviparitySpecies SpecificityDNA, CircularInfluenza A Virus, H9N2 SubtypeAmino Acid SequencePhylogenyCrystallinsMacroglobulinsParamyxoviridaeEggsAnimals, WildAnimal ShellsTurkeysTrager duck spleen necrosis virusViral Core ProteinsPicornaviridae InfectionsParvovirusBeakHerpesviridaeOenantheHepatitis VirusesChinaHemagglutinin Glycoproteins, Influenza VirusRNA, ViralViral ProteinsInfluenza A Virus, H5N2 SubtypeEgg ShellCoturnixReassortant VirusesAntiviral AgentsCarboxypeptidasesSequence Analysis, DNATyphlitisErythrocytesAntigens, ViralCells, CulturedAvastrovirusArgininosuccinic AcidAntibodies, ViralInfluenza A Virus, H7N3 SubtypeHarderian GlandMarek DiseaseViral Envelope ProteinsOrthoreovirus, AvianZalcitabineHepatocytesAvian Sarcoma VirusesHemagglutinins, ViralCloning, MolecularNucleocapsidAnimal StructuresCrop, AvianChick EmbryoArabinofuranosyluracilNeuraminidaseLakesPhosphorothioate OligonucleotidesDNA ReplicationHepatitis B Surface AntigensErythroblastsFeathersHepatitis B Core AntigensGlobinsGlycine Dehydrogenase (Decarboxylating)Glycine Decarboxylase ComplexEmbryo, NonmammalianReceptors, Virus