Situation-specificities of vocalizations in leach's storm-petrel Oceanodroma leucorhoa.

Taoka, Miki; Sato, Tetsu; Kamada, Tsutomu; Okumura, Hiroshi

doi:10.3312/jyio1952.20.82

Cited by 11 publications

(13 citation statements)

References 8 publications

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“…Prior to our study, little was known about the status of populations of nocturnal seabirds on Amatignak, Little Sitkin, and Nizki‐Alaid islands (Byrd et al 2005). Using acoustic recordings, we were able to detect species of birds present and use the known context of each call type to infer the behavior of birds at each site (Brooke 1986, Taoka et al 1988). Although our recordings could not be used to determine the number of birds present, our results indicate that seabird populations on the islands in our study are recovering and, in some cases, breeding.…”

Section: Discussionmentioning

confidence: 99%

“…However, we detected chick departure calls of Ancient Murrelets, confirming the presence of a small breeding population on Amatignak Island. We also detected calls of Leach's and Fork‐tailed storm‐petrels that are associated with attracting mates, courtship, and defense of nest burrows (Simons 1981, Taoka et al 1988, Huntington et al 1996). Although not confirming breeding, these calls indicate that birds were advertising for potential mates and defending burrows.…”

Section: Discussionmentioning

confidence: 99%

“…Also, recognition models were not used to count less common vocalizations. Instead, we counted Leach's Storm‐Petrel purr and screech calls (Taoka et al 1988), Fork‐tailed Storm‐Petrel three‐syllable male calls (Simons 1981), and Ancient Murrelet chick calls and songs (Jones et al 1989) by visually scanning spectrograms.…”

mentioning

confidence: 99%

“…We also considered context associated with each call type recorded as an indicator of breeding status. Leach's Storm‐Petrel chuckle, Fork‐tailed Storm‐Petrel flight, and Ancient Murrelet chirrup calls are given in a wide variety of contexts by adult or prospecting birds (Simons 1981, Taoka et al 1988, Jones et al 1989). Leach's Storm‐Petrel purr and screech calls, Fork‐tailed Storm‐Petrel flight calls, and Ancient Murrelet songs are given from in or near burrows and are associated with mate advertizing, burrow defense, and courtship (Simons 1981, Jones et al 1989, Huntington et al 1996).…”

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confidence: 99%

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Measuring nocturnal seabird activity and status using acoustic recording devices: applications for island restoration

Buxton

Jones

2012

Journal of Field Ornithology

107

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Nocturnal burrow‐nesting seabirds breeding on isolated oceanic islands pose challenges to conventional monitoring techniques, resulting in their frequent exclusion from population studies. These seabirds have been devastated by nonnative predator introductions on islands worldwide. After predators are eradicated, recovery has been poorly quantified, but evidence suggests some nocturnal seabird populations have been slow to return. We evaluated the use of automated acoustic recorders and call‐recognition software to investigate nocturnal seabird recovery after removal of introduced Arctic foxes (Alopex lagopus) in the Aleutian Archipelago, Alaska. We compared relative seabird abundance among islands by examining levels of vocal activity. We deployed acoustic recorders on Nizki‐Alaid, Amatignak, and Little Sitkin islands that had foxes removed in 1975, 1991, and 2000, respectively, and on Buldir, a predator‐free seabird colony. Despite frequent gales, only 2.9% of 2230 recording hours from May to August of 2008 and 2009 were unusable due to wind noise. Recording quality and call recognition model success were highest when recording devices were placed at sites offering some wind shelter. We detected greater vocal activity of Fork‐tailed (Oceanodroma furcata) and Leach's (O. leucorhoa) storm‐petrels and Ancient Murrelets (Synthliboramphus antiquus) on islands with longer time periods since fox eradication. Also, by detecting chick calls in the automated recordings, we confirmed breeding by Ancient Murrelets on an island thought to be abandoned due to fox predation. Acoustic monitoring allowed us to examine the relative abundance of seabirds at remote sites. If a link between vocalizations and population dynamics can be made, acoustic monitoring could be a powerful census method.

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Section: Discussionmentioning

confidence: 99%

Section: Discussionmentioning

confidence: 99%

mentioning

confidence: 99%

mentioning

confidence: 99%

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Measuring nocturnal seabird activity and status using acoustic recording devices: applications for island restoration

Buxton

Jones

2012

Journal of Field Ornithology

107

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“…Playback experiments have demonstrated that these stereotypic call features are what attract nonbreeding females (Bretagnolle & Robisson 1990). A comparison of burrow (‘purr’) calls may be more appropriate for detecting diverging or reproductively isolated populations in Oceanodroma storm‐petrels, since these calls appear to function as a species‐specific cue in Leach's storm‐petrel ( Oceanodroma leucorhoa ; Taoka et al . 1988).…”

Section: Discussionmentioning

confidence: 99%

Differentiation of sympatric populations of the band‐rumped storm‐petrel in the Galapagos Islands: an examination of genetics, morphology, and vocalizations

Smith

Friesen

2007

Molecular Ecology

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In each of at least two locations within the Galapagos Islands, breeding band-rumped storm-petrels (Oceanodroma castro) form two distinct populations that use the same colony site at separate times of the year for reproduction. Temporal segregation of these populations raises the possibility that they are reproductively isolated and represent cryptic species. We examined variation in mitochondrial DNA, morphology, and vocalizations of storm-petrel populations nesting 6 months apart on the islet of Plaza Norte in the Galapagos. Seasonal populations displayed low but significant levels of differentiation in the mitochondrial control region, five morphological variables, and one feature of male vocalizations. Breeding populations appear to have been separated for approximately 1700 years. Given the recent divergence date and relatively high effective population sizes (4000-5600 females each), seasonal populations are unlikely to be in genetic equilibrium. As a result, the low divergence estimate probably reflects historical association and not contemporary genetic exchange. These populations are not sufficiently differentiated to be considered cryptic species. However, they are probably in the early stages of divergence. Consequently, we recommend that cool- and hot season populations on Plaza Norte be recognized as separate management units.

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References

1996

The Behaviour, Population Biology and Physiology of the Petrels

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Situation-specificities of vocalizations in leach's storm-petrel Oceanodroma leucorhoa.

Cited by 11 publications

References 8 publications

Measuring nocturnal seabird activity and status using acoustic recording devices: applications for island restoration

Measuring nocturnal seabird activity and status using acoustic recording devices: applications for island restoration

Differentiation of sympatric populations of the band‐rumped storm‐petrel in the Galapagos Islands: an examination of genetics, morphology, and vocalizations

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