HorsesBreedingReproductionSeasonsSexual Behavior, AnimalAnimal MigrationAnimal HusbandryBirdsNesting BehaviorInbreedingCharadriiformesSongbirdsSelection, GeneticPasseriformesFertilityGenetic VariationCrosses, GeneticCrops, AgriculturalCattleQuantitative Trait LociSheepEquidaeGenetic MarkersQuantitative Trait, HeritableMicrosatellite RepeatsAfrican horse sickness virusModels, GeneticLitter SizeLameness, Animal