The Optokinetic Basis of Head-bobbing in the Pigeon
@article{Frost1978TheOB,
title={The Optokinetic Basis of Head-bobbing in the Pigeon},
author={Barrie J. Frost},
journal={The Journal of Experimental Biology},
year={1978},
volume={74},
pages={187-195}
}1.Head-bobbing of pigeons during walking and landing was studied using high-speed motion photography. 2.The analysis of film records indicated that head-bobbing whilst walking consists of two phases: one where the head is ‘locked’ in space but moves backward relative to its forward moving body; and another where it is thrust rapidly forward to a new position. 3.The fact that head-bobbing is abolished when pigeons walk on a treadmill suggests it is primarily a visual response rather than an…
125 Citations
HEAD-BOBBING DURING WALKING, RUNNING AND FLYING: RELATIVE MOTION PERCEPTION IN THE PIGEON
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- 1988
It is suggested that head-bobbing has the dual function of amplifying relative motion in the retinal image during the thrust phase, making the detection of food objects more likely, while allowing detection of object motion during the hold phase.
Head-bobbing in pigeons: how stable is the hold phase?
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V videography shows that, except for a small but systematic slip that presumably serves as an error signal for retinal image stabilization, the head of the pigeon remains locked in space not only with respect to the horizontal (roll) axis but also with Respect to vertical translation (along the yaw axis) and withrespect to rotation around the pitch and yaw axes.
Vision during head bobbing: are pigeons capable of shape discrimination during the thrust phase?
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To investigate vision during the different phases and in particular to test for visual suppression during the saccadic thrust phase, pigeons are tested on a shape discrimination task, demonstrating that shape discrimination is as good during the thrust phase as it is during the hold phase.
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Abstract1.The head-bobbing rhythm previously reported in pigeons Columba livia during approximately level landing flights also occurs in upwards landing flights. This finding strengthens the evidence…
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The role of head stabilization in providing feedback cues for controlling turning flight in pigeons is investigated and it is confirmed that control of head motion is decoupled from aerodynamic and inertial forces acting on the bird's continuously rotating body during turning flapping flight.
Visual head extension: transitional head coordination in the pigeon squab (Columbia livia).
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Evidence obtained shows that both vestibular and dynamic visual information can independently produce head extension, and places the new behavioral response in the context of a dynamic, relational approach to perceptuomotor coordination.
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