Seasonal and annual variation in the diving behaviour of Hutton's shearwater (<i>Puffinus huttoni</i>)

Bennet, Della G.; Horton, Travis W.; Goldstien, Sharyn J.; Rowe, Lindsay; Briskie, James V.

doi:10.1080/03014223.2020.1767660

Cited by 3 publications

(2 citation statements)

References 46 publications

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“…This is consistent with the greater foraging effort and wider isotopic niches observed for the common diving petrel in the present study during years of marine heatwaves. Likewise, in New Zealand, Hutton's shearwaters (Puffinus huttoni) adapted their behaviour by diving significantly deeper during the same marine heatwave events (Oliver et al 2017, Bennet et al 2020.…”

Section: Inter-annual Variation In Breeding Success Foraging Behaviou...mentioning

confidence: 99%

Impact of extreme environmental conditions: Foraging behaviour and trophic ecology responses of a diving seabird, the common diving petrel

Fromant

Delord

Bost

et al. 2021

Progress in Oceanography

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Section: Inter-annual Variation In Breeding Success Foraging Behaviou...mentioning

confidence: 99%

Impact of extreme environmental conditions: Foraging behaviour and trophic ecology responses of a diving seabird, the common diving petrel

Fromant

Delord

Bost

et al. 2021

Progress in Oceanography

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“…Mixed zooplankton species were collected from depths of 5-50 m from 6 to 12 December 2015. Hutton's shearwaters dive to depths of 35 m (Bennet et al 2020), thus our samples encompassed the range of prey they would likely encounter while foraging.…”

Section: Feather Collection and Prey Samplingmentioning

confidence: 99%

At-sea foraging behaviour in Hutton’s shearwater (Puffinus huttoni) as revealed by stable isotope analysis

Bennet¹,

Horton²,

Goldstien³

et al. 2022

NZJE

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Stable isotope analysis of feathers can provide an indirect method to investigate the diet and foraging locations of birds during the time the feathers were growing. We used the isotopic composition of experimentally-induced feathers to investigate the foraging locations of the Hutton's shearwater (Puffinus huttoni), an endangered seabird that is a breeding endemic to the Kaikōura region of New Zealand. The isotopic composition of feathers was first compared with potential prey items collected from the near-shore marine environment near the breeding colony. By applying trophic fractionation factors (2-4 ‰ increase in δ 15 N for every 1 ‰ increase in δ 13 C) and comparing the isotopic composition of the induced tail feathers and sampled prey items, we found that feather isotopic compositions were not consistent with a diet based on feeding locally. Both the δ 13 C and δ 15 N from zooplankton and fish collected within 8 km of Kaikōura were significantly different than the isotopic composition of induced feathers and were outside of the range expected for consumed local prey items. Instead, we found the isotopic composition of Hutton's shearwater feathers was more consistent with feeding on potential prey items in the seas north-east and around Banks Peninsula, an area c. 100 km south of the breeding colony and where they had been tracked previously. Stable isotope analysis can provide insight into the foraging behaviour of birds at sea and demonstrates the importance of isotopic research in pinpointing foraging locations in seabirds with large geographic ranges.

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A Perspective on Conservation Technologies for Endangered Marine Birds

Ann,

Sonja

2023

Insights Vet Sci

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Seabirds are species in a collection of avian orders that live on and feed in saltwater and include penguins; albatrosses and petrels; gannets and cormorants; and gulls, terns, and auks. They are at risk from human activities with habitat loss, fisheries bycatch, food shortages, introduced predators and pollution impact. These effects are all exacerbated by human-induced climate change. Many researchers, non-governmental organizations, communities, and governments are working to conserve endangered seabird species by developing and implementing technologies and conservation management systems to assist seabird conservation. More recently moves are afoot to ensure organizations share data and outcomes.

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Seasonal and annual variation in the diving behaviour of Hutton's shearwater (Puffinus huttoni)

Cited by 3 publications

References 46 publications

Impact of extreme environmental conditions: Foraging behaviour and trophic ecology responses of a diving seabird, the common diving petrel

Impact of extreme environmental conditions: Foraging behaviour and trophic ecology responses of a diving seabird, the common diving petrel

At-sea foraging behaviour in Hutton’s shearwater (Puffinus huttoni) as revealed by stable isotope analysis

A Perspective on Conservation Technologies for Endangered Marine Birds

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