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Baby chicks in the Galapagos fight to the death
Nasca booby birds on the Galapagos Islands lay two eggs to hatch between three and seven days apart. The stronger chick, which is usually the elder, forces the weaker from the nest. The weaker chick will perish and the parents do not help. The narration explains that this behaviour is not fully understood but some possible explanations are given. This clip was first created on the Planet Earth website: bbc.co.uk/nature/animals/planetearth/. Please note this clip is only available in Flash.
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