Hens feed chicks 母鸡喂小鸡
Moreover, chicks born to stressed hens act as though they too are stressed, even when they have been raised in a poultry paradise.
此外，处于应激状态的母鸡所孵出的雏鸡似乎也受到应激，即便在十分舒适的饲养环境中也是如此。
The hens also changed their behaviour, and reacted with increased alertness, decreased preening and increased vocalisations directed to their chicks.
母鸡也会改变行为，提高警觉性，减少梳理羽毛的次数，增加向雏鸡发声的次数。
During one of the controlled procedures, when the chicks were exposed to a puff of air, the hens' hearts rate increased and eye temperature decreased.
在其中一个控制过程中，当雏鸡暴露在空气中时，母鸡的心跳加快，眼睛温度降低。
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