Sharing your snack: unusual observation of a chick-chick feeding occurrence in colonial king penguin (Aptenodytes patagonicus) - Département Recherches Subatomiques Accéder directement au contenu
Article Dans Une Revue Behaviour Année : 2023

Sharing your snack: unusual observation of a chick-chick feeding occurrence in colonial king penguin (Aptenodytes patagonicus)

Résumé

King penguins (Aptenodytes patagonicus) are colonial seabirds presenting an extraordinary breeding cycle. Parents take over 14-mo to raise a single chick to independence, upon which fledglings depart at sea for more than a year. Juveniles often return to the colony within the three austral summers following departure, and before the age of first reproduction (around ca. 5-6 years old.), possibly to acquire the essential skills involved in breeding. Little to nothing is known on the acquisition of parental behavior. Here, we report an anecdotal, yet highly unusual, observation of chick-chick feeding behavior in this species. The behavior is highly unusual in that two non-sibling chicks, not yet independent, and hatched at different times (early and late) of the same breeding season were observed, the older chick feeding the younger one. Whereas alloparental feeding is known to occur in this species, this is the first reported observation of a chick-chick feeding event. This unusual behavior raises the question of whether the early social environment plays a role in the acquisition of essential parenting skills in this species.
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Dates et versions

hal-04042087 , version 1 (22-03-2023)

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Anne Cillard, Tatiana Fuentes Rodriguez, Jean-Patrice Robin, Pierre Bize, Antoine Stier, et al.. Sharing your snack: unusual observation of a chick-chick feeding occurrence in colonial king penguin (Aptenodytes patagonicus). Behaviour, 2023, 160 (5), pp.489-498. ⟨10.1163/1568539X-bja10212⟩. ⟨hal-04042087⟩
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