Takahē make a nest among vegetation, with overhead cover to hide it from birds of prey. They lay from one to three blotched, pale-buff eggs, which the male and female take turns incubating. In this nest are a real egg, and an artificial egg containing a data logger to record humidity. Researchers used the information to see how often the eggs were left uncovered, and for how long.
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Reference: 10050090 (top); 10050092 (bottom)
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