Aggressive defence of food by precocial chicks varies with its concentration in space
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In juvenile and adult animals, including mammals, birds, fishes and a crustacean, competition for food becomes increasingly aggressive as its spatial concentration increases. This ecological relationship has not been investigated in infant animals, although it is thought that broods of precocial chicks of some avian species compete aggressively for food or status in a brood hierarchy. When pairs of common quail broodmates were offered the same amount of ground corn in four spatial concentrations between ages 15 and 59 days, aggression increased progressively with concentration, culminating in an overall 16-fold increase when corn was in a single clump. These results suggest that aggressive defence may increase with spatial concentration of food in precocial chicks generally, and raise the possibility that a similar pattern could occur in some altricial chicks during the transition to independence and in infants of other animal species.
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Aggressive defence of food by precocial chicks varies with its concentration in space
In: BehaviourSearch for other papers by Reyna Hernández-Reyes in
Current site
Google Scholar
PubMed
Search for other papers by Cristina Rodríguez in
Current site
Google Scholar
PubMed
Search for other papers by Hugh Drummond in
Current site
Google Scholar
PubMed
In juvenile and adult animals, including mammals, birds, fishes and a crustacean, competition for food becomes increasingly aggressive as its spatial concentration increases. This ecological relationship has not been investigated in infant animals, although it is thought that broods of precocial chicks of some avian species compete aggressively for food or status in a brood hierarchy. When pairs of common quail broodmates were offered the same amount of ground corn in four spatial concentrations between ages 15 and 59 days, aggression increased progressively with concentration, culminating in an overall 16-fold increase when corn was in a single clump. These results suggest that aggressive defence may increase with spatial concentration of food in precocial chicks generally, and raise the possibility that a similar pattern could occur in some altricial chicks during the transition to independence and in infants of other animal species.
| All Time | Past 365 days | Past 30 Days | |
|---|---|---|---|
| Abstract Views | 669 | 51 | 13 |
| Full Text Views | 205 | 2 | 0 |
| PDF Views & Downloads | 27 | 4 | 0 |
