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  1. Avoidance of dyed food by the northern bobwhite

    Contributor(s):: Mastrota, F. N., Mench, J. A.

    Since certain colours are aversive to birds, the authors suggest that it might be possible to use dyes to prevent birds from consuming agricultural seeds and pesticide granules. The effectiveness of 8 dyes in repelling food consumption in a gamebird, the northern bobwhite (Colinus virginianus),...

  2. Bird strikes and aircraft fuselage color: a correlational study

    Contributor(s):: Fernandez-Juricic, E., Gaffney, J., Blackwell, B. F., Baumhardt, P.

  3. Colour preferences of domestic chicks in relation to food and water presentation

    Contributor(s):: Roper, T. J., Marples, N. M.

    The colour preferences of chicks presented with artificially coloured food (chick starter crumbs) and water were investigated. In experiment 1, 96 pairs of chicks received red, green or black food in the form of a small pile of crumbs placed on the floor of the test cage, or red, green or black...

  4. Identification of key nest site stimuli for Japanese quail ( Coturnix japonica )

    Contributor(s):: Schmid, I., Wechsler, B.

    Groups of Japanese quail hens were housed in pens (2 x 1 x 0.5 m) with litter and access to a sand-filled dust bath and 4 nest boxes for 2 periods of 15 days. The type of nest boxes varied between the pens and the incidence of eggs laid outside the nest boxes was recorded. In experiment 1 (8...

  5. Individual attributes as predictors of social status in small groups of laying hens

    Contributor(s):: Bradshaw, R. H.

    Physical traits (body weight, feather colour, comb size and comb colour) were investigated as predictors of social status (dominance, aggression and social interactiveness) in 4 groups each of 6 Ross Brown laying fowls. In the 1st group, there was a significant positive correlation between comb...

  6. Pecking at string by individually caged, adult laying hens: colour preferences and their stability

    Contributor(s):: Jones, R. B., Carmichael, N. L.

    The responses of 45-week-old, individually caged laying hens (n=24) to differently coloured (white, yellow, orange, blue) bunches of string, presented singly on consecutive days, were examined. This procedure was repeated at 51 weeks of age in order to assess the stability of observed...

  7. The ability of domestic hens to jump between horizontal perches: effects of light intensity and perch colour

    Contributor(s):: Taylor, P. E., Scott, G. B., Rose, P.

    Commercial non-cage housing systems for laying hens are kept at low light intensities to reduce the incidence of feather pecking. These low light intensity conditions may restrict the ability of hens to visually perceive important environmental features such as perches. This may have the...

  8. The effect of early colour preference and of a colour exposing procedure on the choice of nest colours in laying hens

    Contributor(s):: Huber-Eicher, B.

    It has been observed that hens at the start of lay show a strong preference for a limited number of nests, i.e. those at the corners and at the ends of rows. This leads to overcrowded nests and, as a consequence, to more aggression and an increase in cracked and mislaid eggs. This study aims to...

  9. The influence of light intensity during early exposure to colours on the choice of nest colours by laying hens

    Contributor(s):: Zupan, M., Kruschwitz, A., Huber-Eicher, B.

    When alternative husbandry systems to battery cages are used, a problem may arise whereby eggs are not laid in the nests provided. This leads not only to economic loss, but may also promote the outbreak of cannibalism. However, the choosing of a nest involves complex behavioural patterns and may...