BirdsPasseriformesSongbirdsAnimal MigrationFeathersCharadriiformesAnimals, WildFlight, AnimalPsittaciformesChickensParrotsGeeseAnseriformesRaptorsGalliformesNesting BehaviorFalconiformesVocalization, AnimalPhylogenySpecies SpecificityFinchesBeakDucksColumbidaePoultry DiseasesSparrowsCloacaCrowsBird Fancier's LungPoultrySeasonsAnimals, ZooFeeding BehaviorSpheniscidaeReptilesEcosystemHaemosporidaCattle DiseasesPalaeognathaeDisease ReservoirsBiological EvolutionDinosaursSequence Analysis, DNACoturnixAnimal FeedIntestinesPolymerase Chain ReactionGeographyCattleAnimals, DomesticMammalsPopulation DynamicsSwineMolecular Sequence DataInfluenza A Virus, H5N1 SubtypeStarlingsCampylobacterZoonosesBiodiversityDNA, BacterialRNA, Ribosomal, 16SCecumBifidobacteriumHoming BehaviorPopulation DensityReproductionDiarrheaColony Count, MicrobialIntestine, LargeWindFossilsStrigiformesTreesConservation of Natural ResourcesRadarCoprophagiaCanariesSalmonella Infections, AnimalSalmonellaBileDigestionDigestive SystemGerm-Free LifeLactobacillusBacteroidesAlligators and CrocodilesCockatoosHawksEscherichia coli InfectionsClutch SizeDietParakeetsSwine DiseasesMoltingTime FactorsWingSexual Behavior, AnimalBody SizePsittacosisBehavior, Animal