References
- Duncan , I. J. H. , Horne , A. R. , Hughes , B. O. and Wood‐Gush , D. G. M. 1970 . The pattern of food intake in female Brown Leghorn fowls as recorded in a Skinner box . Anim. Behav. , 18 : 245 – 255 .
- King , J. R. and Farner , D. S. 1961 . “ Energy metabolism, thermoregulation and body temperature. ” . In Biology and Comparative Physiology of Birds , Edited by: Marshall , A. J. New York : Academic Press .
- Richardson , A. J. 1970 . The role of the crop in the feeding behaviour of the domestic chicken . Anim. Behav. , 18 : 633 – 639 .
- Savory , C. J. 1974 . Growth and behaviour of chicks fed on pellets or mash . Br. Poult. Sci. , 15 : 281 – 286 .
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