Bunches of white string
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Bunches Of White String

Research conducted by Jones et al., 1998 revealed that bunches of string were an attractive picking stimuli for laying hens, and that white or yellow colored bunches were preferred to blue or orange ones.

Feather pecking was virtually eliminated when the device remained in the pens from day 1 day of age or when they were presented for 4h per day (McAdie et al., 2005).


  1. Jones, R. B., Blokhuis, H. J., de Jong, I. C. et al. 2004. Feather pecking in poultry: The application of science in a search for practical solutions. Animal Welfare 13(S), 215-219.
  2. Jones, R. B., Carmichael, N. L. 1998. Pecking at string by individually caged, adult laying hens: colour preference and their stability. Applied Animal Behaviour Science 60, 11-23.
  3. McAdie, T. M., Keeling, L. J., Blokhuis, H. J. et al. 2005. Reduction in feather pecking and improvement of feather condition with the presentation of a string device to chickens. Applied Animal Behaviour Science 92, 67-80.