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Incubation of eggs is performed by both sexes in all species except the emperor
penguin, in which it is done by the male alone. The incubation period begins
immediately following the laying of the single egg in the emperor and king
Female jacanas are larger and more aggressive than males; after laying, females
of some species show no interest in the nest or young, leaving incubation and
care of chicks to the male. The nest is a shallow, sodden pile of vegetation that ...
Incubation is performed by both male and female in kingfishers, todies, motmots,
and bee-eaters and by the female alone in the hoopoe and hornbills when she is
fed by the male. Incubation periods of 18 to 22 days have been recorded for ...
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The New Encyclopaedia Britannica (Encyclopaedia)User Review - Not Available - Book Verdict
For virtually all its 238 years,Britannica has ruled the shelves as a peerless general encyclopedia. Reviewers have consistently given it high marks for most of the 12 criteria identified inKister's ... Read full review