DAWSON, W. R. 



54. Kendeigh, S.G. 1939. The relation of metabolism to the develop- 



ment of temperature regulation in birds. J. Exp. Zool. 82:419- 

 438. 



55. Kendeigh, S. C. 1952. Parental care and its evolution in birds. 



Illinois Biol. Mon. 22:1-356. 



56. King, J. R., and D. S. Farner. 1960. Energy metabolism, ther- 



moregulation and body temperature, p. 215-288. In A. J. Mar- 

 shall, [ed.]. Biology and comparative physiology of birds. (Vol. 

 II). Academic Press, New York. 



57. Kleiber, M., and G. F. Winchester. 1933. Temperature regula- 



tion in baby chicks. Proc. Soc.Exper. Biol. Med. 31:158-159. 



58. Lehmann, V. W. 1941. Attwater's prairie chicken, its life his- 



tory and management. North American Fauna 57:1-63. 



59. Lohrl, H. 1955. Schlafengewohnheiten der Baumlalifer ( Certhia 



brachydactyla , C. familiaris) und andere Kleinvogelinkalten 

 Winternachten. Volgelwarte 18:71-77. 



60. Martin, G. J. 1903. Thermal adjustment and respiratory ex- 



change in monotremes and marsupials— A study in the devel- 

 opment of homeothermism. Phil. Trans. Roy. Soc. London, 

 ser. B. 195:1-37. 



61. Mayr, E. 1956. Geographical character gradients and climatic 



adaptation. Evolution 10:105-108. 



62. Newman, M. T. 1956. Adaptation of man to cold climates. Evolu- 



tion 10:101-105. 



63. Norris, K. S. 19 53. The ecology of the desert iguana Dte^o- 



saurus dorsalis . Ecology 34:265-287. 



68 



