AUTHORS PREFACE 



are B. M. Arnold, R. Atkinson, J. Buxton, T. Cade, F. Darling, 

 E. A. G. DufFey, A. Ferguson, Finnur GuSmundsson, H. G. Hasler, 

 P. A. D. Hollom, J. S. Huxley, the late P. Jespersen, G. T. Kay, Miss 

 J. Keighley, T. G. Lethbridge, H. F. Lewis, G.-F. Lundevall, S. 

 Marchant, R. G. Murphy, E. M. Nicholson, R. S. Palmer, R. Perry, 

 R. T. Peterson, L. E. Richdale, M. Romer, F. Salomonsen, H. N. 

 Southern, D. Surrey-Dane, N. Tinbergen, L. Tuck, L. S. V. Venables, 

 H. G. Vevers, K. Williamson and V. G. Wynne-Edwards. Mrs. E. 

 Marshall patiently typed several drafts of most of this book. J. F. 

 Trotter prepared the final copies of most of the maps. One of these is 

 on a mapnet invented by the late Professor G. B. Fawcett and is used 

 with his permission and that of the Royal Geographical Society (e.g. 

 Fig. 24, p. 145). Another mapnet, devised by one of us (J.F.) is used 

 for the first time in this book; it is based on the South Pole with the 

 oceans in three petals, and is useful for showing the range of the many 

 sea-birds that have a primarily southern distribution (e.g. Fig. 22, 

 p. 136). J. Fisher's fellow New Naturalist editors have been encouraging; 

 and Eric Hosking in particular has found us many unique photographs. 

 R. Trevelyan, of Messrs. Gollins, has been most ingenious and helpful. 

 The American Ornithologists' Union, who published our frontispiece 

 first in the Auk, have very kindly allowed us the use of it; this fine 

 painting by Roger Peterson of the interesting cahow, long thought to 

 be extinct, embellished the paper by R. G. Murphy and L. S. Mowbray 

 on their recent rediscovery of its breeding-grounds. 



Ornithologists' wives do many (if not most) of the chores that 

 husbands normally do. We thank ours for more things than they 

 probably remember. 



James Fisher 

 r. m. logkley 



XVI 



