Abstract: A device for testing the viscosity of a fluid contained in a cartridge comprising a tubular housing, a pair of end caps, one end cap being configured for operable connection to a piston and cylinder assembly, and the other end cap being configured to receive an adapter that is connectable to the cartridge and to a plug having an orifice of a predetermined diameter through which the fluid in the cartridge may be extruded.

Abstract: A feeding tube includes a first end opposite a second end, and an interior. A first disc is mounted to the first end and has a first aperture there-through, the first aperture being aligned with the interior of the tube. A solid second disc has a diameter substantially equal to the first disc. A cap has a planar surface and a second aperture through the planar surface. A container has structure forming an opening and configured to removably receive the cap over the opening. The first disc is configured to cover the opening and to fit within the cap in parallel relationship to the planar surface. The container is filled with liquid bird food. The cap, the tube and the first disc may be arranged such that the container is sealed, and may also be arranged such that the feeding tube is directed outwardly from the container and a bird may feed from the tube.