Innate Visual Form Preferences in the Pecking Behavior of Young Chicks
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Abstract
1. Young chicks from the age of 1 to 91/2 days were tested daily for unrewarded two-dimensional form preferences in pecking behavior. 2. Forms having a 049 square inch area were found to be preferred, from high to low, as follows: serrated circle, oval, circle, hexagon, star, pentagon, square, rectangle, and diamond. 3. Chicks that were shown the same forms in a smaller size, .012 square inches in area, preferred them in the same order except that star shifted to last place. The smaller forms elicited a higher level of pecking behavior than did the large ones. 4. There were found increases in pecking behavior as a function of age up to the age of 5 days, after which there was a plateau. Up to (but not including) and after the age of 6-61/2 days the order of preferences for the forms was the same. 5. The disruption of the preference hierarchy at the age of 6-61/2 days is discussed in relation to the food imprinting that HESS (1962, 1964) has demonstrated to occur in chicks.
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| All Time | Past 365 days | Past 30 Days | |
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Innate Visual Form Preferences in the Pecking Behavior of Young Chicks
In: BehaviourSearch for other papers by Elizabeth Bird Goodwin in
Current site
Google Scholar
PubMed
Search for other papers by Eckhard H. Hess in
Current site
Google Scholar
PubMed
Abstract
1. Young chicks from the age of 1 to 91/2 days were tested daily for unrewarded two-dimensional form preferences in pecking behavior. 2. Forms having a 049 square inch area were found to be preferred, from high to low, as follows: serrated circle, oval, circle, hexagon, star, pentagon, square, rectangle, and diamond. 3. Chicks that were shown the same forms in a smaller size, .012 square inches in area, preferred them in the same order except that star shifted to last place. The smaller forms elicited a higher level of pecking behavior than did the large ones. 4. There were found increases in pecking behavior as a function of age up to the age of 5 days, after which there was a plateau. Up to (but not including) and after the age of 6-61/2 days the order of preferences for the forms was the same. 5. The disruption of the preference hierarchy at the age of 6-61/2 days is discussed in relation to the food imprinting that HESS (1962, 1964) has demonstrated to occur in chicks.
| All Time | Past 365 days | Past 30 Days | |
|---|---|---|---|
| Abstract Views | 374 | 50 | 3 |
| Full Text Views | 134 | 0 | 0 |
| PDF Views & Downloads | 40 | 0 | 0 |
