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Cooperative Breeding Behaviors in the Hawaiian Stilt (Himantopus mexicanus knudseni)

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Title:Cooperative Breeding Behaviors in the Hawaiian Stilt (Himantopus mexicanus knudseni)
Authors:Dibben-Young, Arleone
Harmon, Kristen
Lunow-Luke, Arianna
Idle, Jessica
Christensen, Dain
show 1 morePrice, Melissa
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nest sharing
chick rearing
delayed dispersal
show 1 morenesting success
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Date Issued:17 Mar 2021
Abstract:Cooperative breeding, which is commonly characterized by non-breeding individuals that assist others with reproduction, is common in avian species. However, few accounts have been reported in Charadriiformes, particularly island-nesting species. We present incidental observations of cooperative breeding behaviors in the Hawaiian Stilt (Himantopus mexicanus knudseni), an endangered subspecies of the Black-necked Stilt (Himantopus mexicanus), during the 20122020 nesting seasons on the Hawaiian islands of O‘ahu and Moloka‘i. We describe two different behaviors that are indicative of cooperative breeding: (1) egg incubation by multiple adults; (2) helpers-at-the-nest, whereby juveniles delay dispersal and reproduction to assist parents and siblings with reproduction. These observations are the first published accounts of cooperative breeding in this subspecies and merit further investigation, as cooperative breeding may improve population viability of the endangered, endemic Hawaiian Stilt.
Description:Hawaiian Stilt cooperative breeding nesting and behavioral data
Rights:CC0 1.0 Universal
Journal:Ecology and Evolution
Appears in Collections: Hawaii Wildlife Ecology Lab

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