Tadorninae: The Tadorninae is the shelduck-sheldgoose subfamily of the Anatidae, the biological family that includes the ducks and most duck-like waterfowl such as the geese and swans.Influenza A virus subtype H5N1: Influenza A virus subtype H5N1, also known as A(H5N1) or simply H5N1, is a subtype of the influenza A virus which can cause illness in humans and many other animal species. A bird-adapted strain of H5N1, called HPAI A(H5N1) for highly pathogenic avian influenza virus of type A of subtype H5N1, is the highly pathogenic causative agent of H5N1 flu, commonly known as avian influenza ("bird flu").Goose egg addling: Goose egg “addling” is a wildlife management method of population control for Canada geese and other bird species. The process of addling involves temporarily removing fertilized eggs from the nest, testing for embryo development, terminating embryo development, and placing the egg back in the nest.Bokhara Trumpeter: The Bokhara Trumpeter is a breed of fancy pigeon developed over many years of selective breeding. Bokhara Trumpeters, along with other varieties of domesticated pigeons, are all descendants from the rock pigeon (Columba livia).HBV RNA encapsidation signal epsilonGlobal spread of H5N1 in 2006: The global spread of (highly pathogenic) H5N1 in birds is considered a significant pandemic threat.Influenza Research Database: The Influenza Research Database (IRD)IRD Influenza Research Database BRCSquires, R.B.Saturation diving: Saturation diving is a diving technique that allows divers to reduce the risk of decompression sickness ("the bends") when they work at great depths for long periods of time.Salt gland: The salt gland is an organ for excreting excess salts. It is found in elasmobranchs (sharks, rays, and skates), seabirds, and some reptiles.British Poultry Standard: [Poultry Standard.png|thumb|right|The front cover of the 6th Edition of the British Poultry Standards.Bird trapping: Bird trapping techniques to capture wild birds include a wide range of techniques that have their origins in the hunting of birds for food. While hunting for food does not require birds to be caught alive, some trapping techniques capture birds without harming them and are of use in ornithology research.