| 21. | This also prolonged the incubation period when compared to monogamous females.
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| 22. | Nest-building and incubation are done solely by the female.
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| 23. | Both parents take turns in incubation, feeding and nest defence.
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| 24. | The duration of egg incubation is a matter of local preference.
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| 25. | Females lay incubation is the determinant of sex in the young.
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| 26. | Incubation takes 12 days, with a further 14 to fledging.
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| 27. | After incubation ( 12 13 days ), the nymphs hatch.
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| 28. | Incubation is 13 days with a further 18 days to fledging.
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| 29. | Incubation takes 15 19 days, and fledging another 20 26.
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| 30. | The male bring food to the female during incubation and brooding.
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