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Jonathan Cheah Weng Kwong | profile | all galleries >> Avian Galleries >> Ciconiiformes >> Sternini (Terns) >> Sterna albifrous - Little Terns >> LT Nesting 2006 >> LT Evasive Tactics tree view | thumbnails | slideshow

LT Evasive Tactics

From day two onwards, the chicks are actually mobile. However, they choose to stay on the nest mound for longer periods for feeding. This is the best time to get them. Within hours, they can move down the corners of the mound to the valleys or even hide in the vegetation. This is exceptionally dangerous as photographers have learnt to avoid the tops of mounds. Hence, during hatching time, the valleys and vegetation are checked with much caution. When chicks spot predators, they usually disappearing into the shadows whilst the adults call overhead and perform diving bombing. This allows the chicks time to move to cover and like motionless. They are rather clumsy at times. As they grow larger, they will continue to use vegetation as cover.

Parents get into dive bombing mode with shreaks and calls to drive predators like dogs and other birds away from the vicinity of the hiding chick. The chick only opens its mouth for food and stay still. The rest of the adults wll sound the alarm for all the rest of the hiding chicks to remain motionless.

Once the threat is away or has the back turned, the chick would slowly turn its head to locate the next hiding place. He'll check 2 - 3 times to ensure the threat is supressed before making a quick dash for the next cover. When he senses that predators are approaching, it will remain stationary irregardless it has reached a safe location or not. The aerial distractions are the main source of challenge that makes detection of the chicks hard.
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