Injury feigning in the Savanna Nightjar: a test of the vulnerability and brood value hypotheses

Tseng, Shiojenn; Lin, Yung‐Ya; Yang, Yea‐Huei Kao; Wang, Ying; Lin, Wen-Loung

doi:10.1007/s10336-016-1400-0

Cited by 3 publications

(17 citation statements)

References 36 publications

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“…Parental defence should consequently increase immediately post‐hatching but then gradually decrease up until the point where the offspring can protect themselves (Barash , Brunton ). Several studies have found supporting evidence where precocial birds perform distraction displays most intensely around hatch date and over the immediate few days afterwards (Simmons , Stephen , Gramza , Tseng et al ).…”

Section: Timing During Reproductionmentioning

confidence: 92%

“…Which option birds choose may depend on the predator community present and the risk of predation at each stage of reproduction, but certainly many shorebirds appear to avoid nesting in heavily vegetated areas, presumably to increase predator detection (Gochfeld , Martin , Amat & Masero , Muir & Colwell , Saalfeld et al , Anteau et al ). However, there are several well‐described cases of ground‐nesting species from other avian taxa using distraction displays, even when they nest in more enclosed habitats (Wiklund & Stigh , Aragones , Smith , Tseng et al ). There are also a few further cases where distraction displays seem effective for birds that are not ground‐nesting, including species that typically nest low in trees or shrubs, rock crevices, or in holes in trees or walls (Morse , Barash , Burger et al , Leite et al ).…”

Section: Form and Occurrence Across Avian Taxamentioning

confidence: 99%

“…Earlier on, the display involves the parent leaping up and then crouching and flapping while fairly stationary on the ground, whereas once eggs are closer to hatching, the lure display involves more vigorous wing‐thrashing and is more likely to be accompanied by vocalizations (Williamson ). Tseng et al () draw attention to studies that demonstrate how the timing of injury‐feigning behaviours also varies among species of nightjar (Caprimulgidae). Swamp Nightjar Caprimulgus natalensis and Blackish Nightjar Nyctipolus nigrescens males display injury‐feigning behaviour during incubation (Ingels et al , Hustler & Mitchell ), whereas the Savanna Nightjar Caprimulgus affinis (Tseng et al ) and Freckled Nightjar Caprimulgus tristigma injury‐feign only during the nestling period (Steyn ).…”

Section: Timing During Reproductionmentioning

confidence: 99%

“…Tseng et al () draw attention to studies that demonstrate how the timing of injury‐feigning behaviours also varies among species of nightjar (Caprimulgidae). Swamp Nightjar Caprimulgus natalensis and Blackish Nightjar Nyctipolus nigrescens males display injury‐feigning behaviour during incubation (Ingels et al , Hustler & Mitchell ), whereas the Savanna Nightjar Caprimulgus affinis (Tseng et al ) and Freckled Nightjar Caprimulgus tristigma injury‐feign only during the nestling period (Steyn ). For the Blackish Nightjar, the eggs are the most vulnerable developmental stage, corresponding with the timing of most frequent distraction display use (Ingels et al ).…”

Section: Timing During Reproductionmentioning

confidence: 99%

“…For the Blackish Nightjar, the eggs are the most vulnerable developmental stage, corresponding with the timing of most frequent distraction display use (Ingels et al ). It is reasonable to suppose that the behavioural differences found in the timing of distraction displays reflect the differing predation risk during each stage of the nesting period for different species (Tseng et al ). For all bird species, future comparative studies exploring the timing of distraction displays (Sordahl ) in relation to ecological factors such as predation will provide valuable insights into the evolution of these behaviours.…”

Section: Timing During Reproductionmentioning

confidence: 99%

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Avian distraction displays: a review

Humphreys

Ruxton

2020

Ibis

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Distraction displays are conspicuous behaviours functioning to distract a predator's attention away from the displayer's nest or young, thereby reducing the chance of offspring being discovered and predated. Distraction is one of the riskier parental care tactics, as its success derives from the displaying parent becoming the focus of a predator's attention. Such displays are prominent in birds, primarily shorebirds, but the last comprehensive review of distraction was in 1984. Our review aims to provide an updated synthesis of what is known about distraction displays in birds, and to open up new areas of study by highlighting some of the key avenues to explore and the broadened ecological perspectives that could be adopted in future research. We begin by drawing attention to the flexibility of form that distraction displays can take and providing an overview of the different avian taxa known to use anti‐predator distraction displays, also examining species‐specific sex differences in use. We then explore the adaptive value and evolution of distraction displays, before considering the variation seen in the timing of their use over a reproductive cycle. An evaluation of the efficacy of distraction compared with alternative anti‐predator tactics is then conducted via a cost–benefit analysis. Distraction displays are also found in a handful of non‐avian taxa, and we briefly consider these unusual cases. We conclude by postulating why distraction is primarily an avian behaviour and set out our suggestions for future research into the evolution and ecology of avian distraction displays.

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Section: Timing During Reproductionmentioning

confidence: 92%

Section: Form and Occurrence Across Avian Taxamentioning

confidence: 99%

Section: Timing During Reproductionmentioning

confidence: 99%

Section: Timing During Reproductionmentioning

confidence: 99%

Section: Timing During Reproductionmentioning

confidence: 99%

See 3 more Smart Citations

Avian distraction displays: a review

Humphreys

Ruxton

2020

Ibis

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First description of injury feigning behavior in Godlewski's buntings

Liu

Zhang

Wan

et al. 2023

Ecology and Evolution

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Nest defense behavior helps ground‐nesting birds improve their breeding success. Among such behaviors, injury feigning behavior (IFB) is one of the better ways to attract predators and protect birds' nests. IFB is generally associated with shorebirds in general and plovers in particular, however, through field observation, it has been found this behavior is also exhibited in bunting species when they facing the risk of predation. We attempt to explore the detailed description of this behavior in buntings and the factors that affect this behavior. Based on video‐recordings of the nest defense behavior by the ground‐nesting bird Godlewski's bunting (Emberiza godlewskii) against nest invaders, we explored the characteristic of IFB and differences in nest defense behavior during their brooding seasons. The results showed that female buntings had a distinct IFB: the wings of buntings incited within 60°–90° of the body, ran and called rapidly, pretending to be injured and unable to fly. The nest stage had significant and extremely significant effects on IFB and movement distance (MD), respectively. And IFB was more likely to occur in brooding (34.62%) than incubation period (16.42%). This indicates that there are significant differences in the IFB of buntings at different breeding stages.

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Biometrics, distribution, and breeding notes of Savanna Nightjar (Caprimulgus affinis) in several islands of Indonesia

Widodo

Sulistyadi

2021

Biodiversitas

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Abstract. Widodo W, Sulistyadi E. 2021. Biometrics, distribution, and breeding notes of Savanna Nightjar (Caprimulgus affinis) in several islands of Indonesia. Biodiversitas 22: 2756-2762. The Savanna Nightjar Caprimulgus affinis Horsfield, 1821, a member of the family Caprimulgidae, is a sexually dimorphic, insectivorous nightjar species commonly found in Southeast Asia, including Indonesia. A least-concern species, Savanna Nightjar has diverse habitats from grasslands to shrubs to high-rise rooftops in the middle of the city. Yet, its breeding habits, particularly in urban areas, remain obscure. The purpose of the research is to discuss the biometric measurement, distribution pattern and notes of the breeding of Savanna Nightjar, through analyzing 50 specimens originating from Java, Sumatra, Billiton, Borneo, and Nusa Tenggara Islands belonging to the Museum of Zoology Bogor (MZB) in Cibinong and through a series of observation. The morphological measurements of specimens include the measurements of the length of the bodies, the wings, the tails, the bills, and the tarsi. One-way ANOVA analysis showed that the length of the body and the tail of Savanna Nightjar in Nusa Tenggara are significantly longer than those of Savanna Nightjar in Java, Sumatra, Billiton, or Borneo islands. The biometric differences could have been contributed to different habitat characteristics. Additionally, it was found the likelihood of breeding habit of Savanna Nightjar in urban areas with that of the countrysides because of the resemblance of semi-natural ecosystems in the city such as artificial rivers, small lakes, and parks to Nightjar’s open landscape natural habitats, which facilitates the breeding habits. Still, the migration of Savanna Nightjar from open country-landscapes to the metropolitan areas remains elusive and requires a more detailed study

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Injury feigning in the Savanna Nightjar: a test of the vulnerability and brood value hypotheses

Cited by 3 publications

References 36 publications

Avian distraction displays: a review

Avian distraction displays: a review

First description of injury feigning behavior in Godlewski's buntings

Biometrics, distribution, and breeding notes of Savanna Nightjar (Caprimulgus affinis) in several islands of Indonesia

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