The invention describes a poultry-loading machine able to guide poultry into a cage, the cage having an opening and a bottom surface. The machine comprises: a main frame; a first conveyor belt for transporting the poultry from a first position into a second position, the first conveyor belt being supported by the main frame; and a second conveyor belt for transporting the poultry into the container, the second conveyor belt defining a loading belt surface. The machine also comprises a device for modifying the inclination of the second conveyor belt so that the loading belt surface is substantially parallel to the bottom of the container; and an approach frame which supports the second conveyor belt, the approach frame being able to move the second conveyor belt towards and away from the container, the second conveyor belt being displaceable so as to enter into the container and transport the poultry inside it.