She hatched chicks with either strong or weak lateralisation, then presented the two groups with food hidden among small pebbles and the threatening shape of a fake predator flying overhead.

她孵化出了具有强侧向或弱侧向的雏鸡，然后为这两组小鸡准备了隐藏在小鹅卵石中的食物，还制造出假的掠食者飞过头顶的威胁形状。

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It follows claims that low-flying jets on a training exercise recently led to mass panic, with kittiwake chicks falling into the sea and drowning.

BBC: Farne Islands no-fly zone to protect kittiwakes