Hepatic tanager to the song of the black-headed grosbeak, another member of the Cardinalidae. The flight call is a husky and rising "weet". It looks for food in the foliage of trees, moving slowly and methodically; different individuals use different strategies. In summer, the northern form largely eats insects, spiders and some fruit. In Mexico, it has been observed to eat nectar. From Oaxaca south, it follows swarms of army ants. Even the northern population's behavior and life history are remarkably little known. Hepatic tanager The hepatic tanager ("Piranga flava") is a medium-sized American songbird. Formerly placed in the tanager family (Thraupidae),
British Institute of Organ Studies British Institute of Organ Studies The British Institute of Organ Studies, more commonly known by its acronym BIOS, is a British organisation and registered charity which aims to promote study and appreciation of all aspects of the pipe organ. Further, it acts as a lobbying body to raise awareness of organ issues with appropriate statutory bodies. Membership is open to all. The aims of BIOS are BIOS publishes a quarterly Reporter newsletter and magazine and a yearly Journal which contains articles on organ history. BIOS is also responsible for the National Pipe Organ Register (NPOR), which aims to catalogue all