Optimal foraging and timing processes in the starling, Sturnus Vulgaris: effect of inter-capture interval
Article Abstract:
Foraging behavior of starlings is affected by information processing techniques and psychological factors related to time and memory. In an experimental study starlings, Sturnus vulgaris, were provided with a controlled environment where food was distributed in patches. Time spent by starlings on waiting after food had been depleted, time after which stalings gave up looking for food in a depleted patch and time after which starlings moved on to a new patch were measured. Results indicated the birds identified the general dynamics of the task and used reasonable rules to forage for food.
Publication Name: Animal Behaviour
Subject: Zoology and wildlife conservation
ISSN: 0003-3472
Year: 1992
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Memory for inter-reinforcement interval variability and patch departure decisions in the starling, Sturnus vulgaris
Article Abstract:
An increase in the variability of inter-reinforcement intervals during foraging decisions among starlings causes flattening of response rate functions and giving-in time distributions. An increase in variability also leads to greater asymmetry of response functions. The starlings obtain food during the experiment from patches and a new patch can be reached only after traveling between two perches 20 times. A model of decision making assumes that all reinforcement intervals are remembered while another assumes that only intervals with extreme values are remembered.
Publication Name: Animal Behaviour
Subject: Zoology and wildlife conservation
ISSN: 0003-3472
Year: 1996
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Value of food aggregates: parallel versus serial discounting
Article Abstract:
A titration paradigm was used to study rats' choices for food sequences. Rats were given a choice between a sequence of five pellets delivered closely in time and a sequence of five pellets with an inter-pellet delay. The results suggested that rats did not view the sequence of five pellets as a whole and that they did not treat the time before and within the sequence differently. Each reward was treated independently of the others in the same sequence.
Publication Name: Animal Behaviour
Subject: Zoology and wildlife conservation
ISSN: 0003-3472
Year: 1995
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