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- After courtship, blue-footed boobies lay one to three eggs asynchronously, thereby promoting the chance for “facultative siblicide” during food shortages. Under such conditions, older siblings may kill younger ones by forced starvation or by dragging them out of the nest.
esajournals.onlinelibrary.wiley.com/doi/10.1002/fee.2273The curious case of the blue‐footed booby nest - Zeveloff ...
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Do blue-footed booby chicks kill their siblings?
Do blue-footed boobys push siblings from the nest?
Why do blue-footed booby parents make steep-sided nests?
Can a booby kill a brother or sister?
Facultatively siblicidal blue-footed booby A-chicks only kill their nest mate(s) when necessary. Obligately siblicidal masked and Nazca booby A-chicks kill their sibling no matter if resources are plentiful or not; in other words, siblicidal behavior occurs independently of environmental factors.
Blue-footed booby chicks practice facultative siblicide, opting to cause the death of a sibling based on environmental conditions. The A-chick, which hatches first, will kill the younger B-chick if a food shortage exists.
Aug 24, 2023 · Aggressive competition among sibling chicks differs between blue-footed and brown boobies. In a brood of two blue-foot chicks, the senior one (4 days older) maintains dominance over the 3-month nestling period by daily low-level attacking, ensuring privileged growth and survival for itself by limiting junior’s begging and feeding.
Abstract Behaviorally dominant nestlings routinely kill sibling nestmates in blue-footed booby (Sula nebouxii) broods during periods of food shortage.
Nov 2, 2020 · Yet Drummond (pers comm) offers that blue-footed fledglings do not forcefully push siblings from the nest, stressing that whether a chick is expelled depends on behavior rather than nest architecture.
- Sam Zeveloff
- 02 November 2020
- 2020
- 18, Issue9
Jun 30, 2023 · Do blue footed boobies raise their babies together? Yes. Both males and females will incubate the eggs in the nest, and they’ll take turns feeding the chicks once they hatch.
Aug 3, 2010 · — What does not kill them makes them successful blue-footed boobies. Blue-footed boobies abuse younger and weaker siblings in the nest, but research shows that persecuted chicks turn...
