Abstract: Poultry inoculation apparatus includes a solenoid-driven hypodermic needle which pierces the web of the constrained wing of a bird. A positive displacement pump delivers vaccine or other treating liquid to the needle for administration while the needle is in extended position.

Abstract: The invention in a bird avert system is for installation at a polluted pond, in or around a wet lands area, or the like, to discourage or frighten away birds and includes microwave, radar, or other signal generation and receiving arrangements for forming an electronic net a distance above the pond or ground level, that is triggered by passage therethrough of a bird. On sensing a bird presence in the electronic net, operation of alarm devices for frightening away the bird is commanded. The alarm devices are operated both on a sensing of a bird passage through the electronic net and at timed intervals, and the alarm devices can include high intensity and/or strobe lights, that can be colored or filtered appropriately to present primary colors as a bird is sensitive to, speakers for broadcasting sounds such as human voices, screeching, guns firing, and the like, as would frighten a bird, and floating platforms maintained under usual bird flight paths that may include moving human and predator bird replicas.

Abstract: A detection and weighing device for selectively distinguishing two groups of animals, such as for instance cocks and hens, one of the groups to be distinguished being provided with a detection element, for instance a label, consisting of or provided with amorphous magnetic material. This material is recognized with the aid of an alternating magnetic field and a receiving coil suitable for that purpose, and the presence or absence of the detection element, together with the weight determined by the weighing device on which the detection system is arranged, indicates whether an animal from one group or the other group is involved, so that, for instance, the average weight of the two groups can be determined. Instead of being used in combination with a weighing device, this detection device can also be used while being coupled to other presence-detection devices.

Abstract: Apparatus for operating needle to inoculate the web of a bird's wing. An arm rocks a needle holder back and forth between a serum container and web positioner, along a path which causes the needle holder to move substantially vertically into and out of the container and web positioner. Gears cause the needle holder to pivot on the arm in response to pivotal movement of the arm, so that the needle points downwardly throughout its movement.