Alternative strategies in avian scavengers: how subordinate species foil the despotic distribution

Kendall, Corinne J.

doi:10.1007/s00265-012-1458-5

Cited by 43 publications

(72 citation statements)

References 42 publications

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“…In addition, White-backed Vultures are dominant over Lappet-faced Vultures once they reach a certain group size (Kendall 2013). Thus, although Lappet-faced Vultures' larger body size confers dominance when they are one-onone with Gyps (Mundy et al 1992), individuals or pairs of Lappet-faced Vultures are generally outcompeted by large groups of Gyps at large carrion resources (Clark and Mangel 1986, Kendall 2013.…”

Section: Introductionmentioning

confidence: 99%

“…In addition, these species appear to associate with each other at food patches, limiting potential benefits of aggregation and disassociation that may enable coexistence in other scavengers (Atkinson and Shorrocks 1981, Hartley and Shorrocks 2002). Despite these differences in feeding preferences, there remains a cost to late arrival, in that Rüppell's and Lappet-faced Vultures are less likely to feed as time since carcass discovery by other scavengers increases (Kendall 2013). White-backed Vultures have higher search efficiency and are more likely to discover carcasses than either Rüppell's or Lappet-faced Vultures (Kendall 2013).…”

Section: Introductionmentioning

confidence: 99%

“…Despite these differences in feeding preferences, there remains a cost to late arrival, in that Rüppell's and Lappet-faced Vultures are less likely to feed as time since carcass discovery by other scavengers increases (Kendall 2013). White-backed Vultures have higher search efficiency and are more likely to discover carcasses than either Rüppell's or Lappet-faced Vultures (Kendall 2013). …”

Section: Introductionmentioning

confidence: 99%

“…Habitat-use studies have demonstrated that spatial segregation of resource use does not occur among these three species (Kendall 2013).…”

Section: Introductionmentioning

confidence: 99%

“…For most avian scavengers in the Masai Mara National Reserve (MMNR), Kenya, coexistence patterns can be explained by spatial segregation in resource use, resource partitioning, and tradeoffs in arrival time and competitive ability, with competitively inferior species arriving at food patches first (Kruuk 1967, Kendall 2013. However, for some species, such as Rüppell's Vulture (Gyps rueppellii), White-backed Vulture (G. africanus) (Figure 1; hereafter, ''Gyps'' denotes these two species), and Lappet-faced Vulture (Torgos tracheliotos), the mechanisms of coexistence remain unclear.…”

Section: Introductionmentioning

confidence: 99%

See 4 more Smart Citations

Mechanisms of Coexistence in Vultures: Understanding the Patterns of Vulture Abundance at Carcasses in Masai Mara National Reserve, Kenya

Kendall

Virani

Kirui³

et al. 2012

The Condor

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Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

“…Habitat-use studies have demonstrated that spatial segregation of resource use does not occur among these three species (Kendall 2013).…”

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

See 3 more Smart Citations

Mechanisms of Coexistence in Vultures: Understanding the Patterns of Vulture Abundance at Carcasses in Masai Mara National Reserve, Kenya

Kendall

Virani

Kirui³

et al. 2012

The Condor

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A dead giveaway: Foraging vultures and other avian scavengers respond to auditory cues

Jackson

Maddox

Mbise

et al. 2020

Ecology and Evolution

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Carrion represents an unpredictable and widely distributed primary food source for vultures and other avian scavengers. Avian scavengers in African savanna ecosystems are reported to rely exclusively on visual stimuli to locate carcasses. However, carnivores’ predation of large mammalian herbivores and subsequent competition for access to the carcass can result in considerable noise, often audible over long distances and for prolonged periods. Vultures and other avian scavengers may therefore detect and respond to these auditory cues, as do the mammalian carnivores alongside which vultures have coevolved, but this has not been investigated to date. Working in the Serengeti ecosystem, Tanzania, we used diurnal auditory broadcasts to simulate predation and competitive carnivore feeding interactions. Based on the current understanding of avian scavenger ecology, we hypothesized that avian responses to call‐in stations would be evoked exclusively by visual, rather than auditory, cues. We therefore predicted that (a) the arrival of avian scavengers at call‐in stations should be preceded and facilitated by mammalian carnivores and that (b) the arrival of avian scavengers would be positively correlated with the number of mammalian scavengers present, which would increase detectability. We recorded 482 birds during 122 separate playback events. In 22% of these instances, avian scavengers arrived first, ruling out responses based exclusively on visual observations of mammalian carnivores, thereby contradicting our first prediction. Furthermore, the first avian arrivals at survey sessions were inversely related to the number of hyenas and jackals present, contradicting our second prediction. Since no bait or carcasses were used during the experiments, these responses are indicative of the birds’ ability to detect and respond to audio stimuli. Our findings challenge the current consensus of sensory perception and foraging in these species and provide evidence that avian scavengers have the ability to use sound to locate food resources.

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Effects of intraspecific competition and body mass on diet specialization in a mammalian scavenger

Lewis

Hughes

Rogers

2022

Ecology and Evolution

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Alternative strategies in avian scavengers: how subordinate species foil the despotic distribution

Cited by 43 publications

References 42 publications

Mechanisms of Coexistence in Vultures: Understanding the Patterns of Vulture Abundance at Carcasses in Masai Mara National Reserve, Kenya

Mechanisms of Coexistence in Vultures: Understanding the Patterns of Vulture Abundance at Carcasses in Masai Mara National Reserve, Kenya

A dead giveaway: Foraging vultures and other avian scavengers respond to auditory cues

Effects of intraspecific competition and body mass on diet specialization in a mammalian scavenger

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