- ADAMS , A.W. and CRAIG , J.V. 1985 . Effects of crowding and cage shape on production and profitability of caged layers: a survey . Poultry Science , 64 : 238 – 242 .
- APPLEBY , M.C. , MAGUIRE , S.N. and MCCRAE , H.E. 1985 . Movement by domestic fowl in commercial flocks . Poultry Science , 64 : 48 – 50 .
- APPLEBY , M.C. , HOGARTH , G. , ANDERSON , J.A. , HUGHES , B.O. and WHITTEMORE , C.T. 1988 . Performance of a deep litter system for egg production . British Poultry Science , 29 : 735 – 751 .
- APPLEBY , M.C. , HUGHES , B.O. and HOGARTH , G. 1989 . Behaviour of laying hens in a deep litter house . British Poultry Science , 30 : 545 – 553 .
- APPLEBY , M.C. , HUGHES , B.O. and ELSON , H.A. 1992 . Poultry Production Systems. Behauiour Management and Welfare , WaUingford : CA.B. International .
- BUSIER , N.E. 1994 . Find Repart m research project on cannibalism in laying hens; A joint project between Oxford University end MAFF , Meden Vale, Nottinghamshire : Gleadthorpe (ADAS) Experimental Farm .
- CRAIG , J.V. and GUHL , A.M. 1969 . Territorial behaviour and social interactions of birds kept in large flocks . Poultry Science , 48 : 1622 – 1628 .
- DAWKINS , M.S. 1989 . Time budgets in Red Jungle fowl as a basis for the assessment of welfare in domestic fowl . Applied Animal Behaaiour Science , 24 : 77 – 80 .
- DAWKINS , M.S. and HARDIE , S. 1989 . Space needs of laying hens . British Poultry Science , 30 : 413 – 416 .
- FAWC . 1991 . Report on the Welfare of Laying Hens in Colony Systems ToKvorth , Farm Animal Welfare Council .
- FUJITA , H. 1973 . Quantitative studies on the variations in feeding activity of chickens. II. Effect of the physical form of the feed on the feeding activity of laying hens . Japanese Poultry Science , 10 : 47 – 54 .
- FREEDOM FOODS . 1996 . Freedom Food. The RSPCA Welfare Standards for Laying Hens , Lewes, Sussex : Royal Society for the Prevention of Cruelty to Animals .
- GENSTAT . 1993 . Procedure Library Manual Release 3(1) , Rothamsted Experimental Station Lawes Agricultural Trust .
- GIBSON , S.W. , DUN , P. and HUGHES , B.O. 1986 . The performance and behaviour of laying fowls in a covered strawyard system 1983-1986 , The Scottish Agricultural Colleges Research and Development Note No 35
- GIBSON , S.W. , DUN , P and HUGHES , B.O. 1988 . The performance and behaviour of laying fowls in a covered strawyard system . Research and Development in Agriculture , 5 : 153 – 163 .
- HANSEN , I. 1994 . Behavioural expression of laying hens in aviaries and cages: frequencies, time budgets and facility utilisation . British Poultry Science , 35 : 491 – 508 .
- HEARN , P.J. A comparison of troughs, nipples and cup drinkers for laying hens in cages . Gleadthorpe Experimental Husbandry Farm Poultry Booklet . pp. 94 – 98 .
- HUGHES , B.O. 1975 . “ The concept of an optimal stocking density and its selection for egg production ” . In Economic Factor's affecting Egg Production , Edited by: BOORMAN , K.N. and FREEMAN , B. M. 271 – 298 . Edinburgh : British Poultry Science Ltd. .
- HUGHES , B.O. , WOOD-GUSH , D.G.M. and MORLEYJONES , R. 1974 . Spatial organization in flocks of domestic folws . Animal Behaviour , 22 : 438 – 445 .
- HUGHES , B.O. , CARMICHAEL , N.L. , WALKER , A.W. and GRIGOR , RN. 1997 . Low incidence of aggression in large flocks of laying hens . Applied Animal Behaviour Science , in press
- MCBRIDGE , G. and FOENANDER , F. 1962 . Territorial behaviour in flocks of domestic fowl . Nature, London , 194 : 102
- MCLEAN , K.A. , BAXTER , M.R. and MICHIE , W . 1986 . A comparison of the welfare of laying hens in battery cages and in 3 alternative systems . Research and Development in Agriculture , 3 : 93 – 98 .
- MAFF . 1987 . Codes of Recommendations for the Welfare of LivestockDomestic Fowls , Alnwick : Ministry of Agriculture, Fisheries and Food .
- MINITAB . 1994 . Minitab Release 10.2 , Minitab Inc. Pennsylvania, State College .
- NICOL , C. 1987 . Behavioural responses of laying hens following a period of spatial restriction . Animal Behaviour , 35 : 1709 – 1719 .
- SAVORY , C.J. 1979 . “ Feeding Behaviour ” . In Food Intake Regulation in Poultry , Edited by: BOORMAN , K.N. and FREEMAN , B.M. 277 – 323 . Edinburgh : British Poultry Science .
- SCOTT , G.B. and PARKER , C.A.L. 1994 . The ability of laying hens to negotiate horizontal perches . Applied Animal Behaviour Science , 42 : 121 – 127 .
- VESTERGAARD , K. 1982 . Dust-bathing in the domestic fowl-diurnal rhythm and dust deprivation . Applied Animal Ethology , 8 : 487 – 495 .
- WALKER , A.W. 1997 . Effect of stocking density on the incidence of damaging pecking in alternative systems. 1. Production , Meden Vale, Notts, , UK : ADAS Gleadthorpe . Unpublished Report
- WELLS , R.G. 1972 . The effect of varying stocking density on the development and subsequent rearing performance of floorreared pullets . British Poultry Science , 13 : 13 – 25 .
- WOOD-GUSH , D.G.M. , DUNCAN , I.J.H. and SAVORY , C.J. 1978 . Observations on the social behaviour of domestic fowl in the wild . Biology of Behaviour , 3 : 193 – 205 .
British Poultry Science
Volume 40, 1999 - Issue 2