First published online June 13, 2008
Journal of Experimental Biology 211, 2052-2057 (2008)
Published by The Company of Biologists 2008
doi: 10.1242/jeb.017194
Multimodal signaling in fowl, Gallus gallus
Carolynn L. Smith* and
Christopher S. Evans
Centre for the Integrative Study of Animal Behaviour, Macquarie
University, Sydney, NSW 2109, Australia

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Fig. 1. Hens' mean food search duration by treatment. Values are means ±
s.e.m., N=24 (*P<0.05, ANOVA, Tukey's HSD
adjusted). Inset image depicts hen fixating binocularly on the substrate, a
key element of food searching behavior.
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Fig. 2. Mean food search duration as a proportion of the 60 s playback. Values are
mes ± s.e.m., N=24 hens. Scores are adjusted for latency to
begin food search (see text for details). (*P<0.05,
ANOVA, Tukey's HSD adjusted.)
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Fig. 3. Time spent by hens inspecting the high-definition video display. Values are
means ± s.e.m. (N=24 hens). (*P<0.05,
ANOVA, Tukey's HSD adjusted.) Inset image depicts hen fixating binocularly on
the plasma display with the frontal field.
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© The Company of Biologists Ltd 2008