Fält B
Division of Ethology, Department of Zoology, University of Stockholm Sweden.
Behav Processes. 1981 Dec;6(4):303-17. doi: 10.1016/0376-6357(81)90048-6.
Sixty-nine chicks, brooded by hens, were given the choice of approaching the clucking sound of the familiar hen or another clucking source. The effects of age and prenatal experience of clucking on the responsiveness to their hen's clucking were also investigated. Eighty-three percent of all chicks tested chose the familiar hen clucking after a certain age. By 4 days of age, 29% of artificially incubated chicks approached the clucking of a familiar hen. Seventy-four percent of naturally incubated chicks and 89% of chicks artificially incubated until pipping and then naturally incubated, showed this discrimination. This corresponds well to the natural situation, in which the hen remains in the nest with the chicks for up to 3 days after hatching. The results also indicate that late prenatal experience of the maternal call is of importance for the later responsiveness to this call.
69只由母鸡孵化的小鸡，被给予接近熟悉母鸡的咯咯声或另一个咯咯声来源的选择。还研究了年龄和产前对咯咯声的体验对小鸡对其母鸡咯咯声反应性的影响。所有接受测试的小鸡中，83%在一定年龄后选择了熟悉母鸡的咯咯声。到4日龄时，29%的人工孵化小鸡接近熟悉母鸡的咯咯声。74%的自然孵化小鸡以及89%人工孵化至啄壳然后自然孵化的小鸡表现出这种辨别能力。这与自然情况非常相符，即在孵化后母鸡会与小鸡在巢中待上长达3天。结果还表明，产前后期对母性叫声的体验对于后期对这种叫声的反应性很重要。
