Birds and men impinged rather little on one another until recent times. I cannot, however, do more historically than very briefly note the key points which have brought ornithology to where it now stands, around the end of the second Millennium AD. This sets the immediate agenda for further development, to be conveniently considered under the nine main groupings using in our just completed compendious Birds of the Western Pulearctic (Cramp 1977(Cramp -1994. From this we pass on to review, equally summarily, the existing structure and institutions of ornithology, to learn what kinds of redevelopment are called for, nationally and internationally. The theme of this conference leads on to conservation. How can the advancing knowledge of birds best be applied to their effective conservation and to that of the biosphere and its biodiversity? Finally, how can we pursue our mission to communicate to the world our already rich knowledge of birds and their rewarding ways of life, so that the message is put to use in our too man-centred civilization?Modern ornithology rests on the elaborate inventories, anatomies and classifications embarked on some three centuries back. In 1858. Professor Alfred Newton. with others, founded the British Ornithologists' Union to give a collective mind and voice to ornithology. He soon followed this by promoting the fitst modern bird protection law. Soon afterwards, in 1884, ornithology held its first international conference in Vienna, long before the physicists got round to having one. Scientists in the British Association then took the initiative in organizing systematic field studies into bird migration, already the target of isolated ringing schemes which were to pioneer the employment of technology in bird studies. Bird photography, filming and sound recording soon followed, while binoculars and telescopes powerfully aided the ornithologist's eye.So, as the 20th century opened, enough men and women had come together in Britain to make a fair start with various lines of ornithology, and some international background had emerged. But already the ornithological establishment was showing signs of growing rigidity. Dominated by old-style museums, and small groups at universities and in natural history societies, it tended to carry on as before. A few rich private figures launched out, for example, on introductions. Even more open minded younger men. such as Bowdler * The original paper by Max (E. M.) Nicholson has been, in important respects. revised and substantially supplemented by Humphrey Crick. in order to fill a number of gaps, to improve perspective and to update it with more comprehensive references.