Managing human disturbance: factors influencing flight-initiation distance of birds in a West African nature reserve

Braimoh, Bukola; Iwajomo, Soladoye B.; Wilson, Mark W.; Chaskda, Adams A.; Ajang, Afan; Cresswell, Will

doi:10.2989/00306525.2017.1388300

Cited by 26 publications

(18 citation statements)

References 78 publications

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“…We also found species-specific FID and FR, which corroborated with other studies (Burger & Gochfeld 1998;Blumstein et al 2003;Braimoh et al 2018). Previous studies demonstrated species-specific responses that are driven by several factors such as previous exposure to humans (Sproat et al 2020), individual experiences (Martín & López 2015), hunting pressure (Stankowich 2008;Sproat et al 2020) and life history strategies (Bennett & Owens 2002).…”

Section: Discussionsupporting

confidence: 91%

Factors influencing the flush response and flight initiation distance of three owl species in the Andaman Islands

et al. 2021

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Effects of anthropogenic pressures on birds of the Andaman Islands have been documented to some extent, however studies on the effect of human activities on the behavioural response of these birds are limited. This study assessed the anti-predatory behaviour (flush response - FR and flight initiation distance - FID) of three owl species (Otus sunia, Otus balli, and Ninox obscura) in response to human stimuli and factors influencing it on the Andaman Islands. In total, 63 % of owls flushed from their roost sites in response to approaching human, and such a response varied between species. Similarly, FID varied widely among the species ranging from 4.23 to 6.73 m. The FR of N. obscura was influenced by the count of climbers, presence of spine, and branch status, while roost height, ambient temperature, and lower count of climbers contributed to a higher FID. For the two Otus species, camouflage and pairing were found to influence their FR while FID of O. balli was influenced by roost height, pairing, and presence of spines. Our results indicated that the anti-predatory behaviour of owls on the Andaman Islands was species- and site-specific and prolonged disturbance to their roost sites may affect the survival and reproductive rate of these owls.

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Section: Discussionsupporting

confidence: 91%

Factors influencing the flush response and flight initiation distance of three owl species in the Andaman Islands

et al. 2021

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“…Lateralization of vigilance can differ even between closely related species, as shown, for example, in the three species of emberizid sparrows (Franklin and Lima, 2001). In some species, vigilance behaviour evokes a right-eye bias (Franklin and Lima, 2001;Chivers et al, 2016;Romano et al, 2017) or no bias at all (Franklin and Lima, 2001;Beauchamp, 2013;Blumstein et al, 2018).…”

Section: Discussionmentioning

confidence: 99%

Lateralization of vigilance in geese: influence of flock size and distance to the source of disturbance

Zaynagutdinova

Karenina

Giljov

2020

BioComm

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Left-eye preference, implicating right hemisphere advantage, is typical for vigilant behaviour of many vertebrates. Nevertheless, lateralization of vigilance may be manifested in other ways, such as different reactions to the danger viewed with the right and left eye. Here, we studied one-side biases in the orientation of white-fronted geese Anser albifrons feeding in flocks at different distances to the source of anthropogenic disturbance (a road with traffic) and in flocks of different sizes. The birds which used the left eye to monitor the road were at shorter distances to the road than the birds which used the right eye. The tendency to monitor the road with the right eye decreased with increasing flock size. Trade-offs between feeding, social and vigilant behaviour could explain these tendencies.

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“…The most consistent difference seen in foraging behaviour and body mass and body condition was between HHP and LHP days. Coping with short-term temporal fluctuations in resource availability, which might also correlate with anthropogenic disturbance (Braimoh et al 2018) and predation patterns (i.e. fewer predators on campus when human foot traffic is high) require a high level of adaptability.…”

Section: Discussionmentioning

confidence: 99%

Anthropogenic food availability and body mass maintenance in urban Red-winged Starlings Onychognathus morio

Risi

Sumasgutner

Cunningham

2021

Ostrich

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Anthropogenic food availability is influenced by short-term fluctuations in human presence, especially in core urban areas. Few studies have explored responses to such day-to-week fluctuations, specifically on body mass and body condition of urban birds. Here, we investigated non-breeding body mass maintenance and body condition in Red-winged Starlings Onychognathus morio resident at the University of Cape Town, Western Cape, South Africa, in relation to the proportion of impervious surfaces within their home ranges ('built-up index'). We hypothesised that the built-up index correlates with the starlings' ability to maintain mass, which is mediated by anthropogenic food availability. In a community science project focused on the university campus, we estimated home range sizes and combined these data with systematic behavioural observations (focals), transects to estimate anthropogenic food availability and repeated body mass measurements. Individual starlings with more built-up home ranges were heavier; they were also heavier and in better body condition on high human presence days (weekdays in term time). We found no relationship between the amount of anthropogenic food available or the proportion of anthropogenic food consumed and built-up index, nor between the times spent foraging or foraging efficiency and built-up index. However, anthropogenic food availability was higher on high human presence days when starlings also consumed more anthropogenic food and tended to spend less time foraging, compared with low human presence days (weekends and vacation). There is growing concern that anthropogenic food could have negative consequences during the breeding season, when parents might be provisioning 'junk food' to their offspring. This study provides additional understanding of urban impacts on avian species and the role of anthropogenic food. Disponibilité de la nourriture d'origine anthropique et maintien de la masse corporelle chez les Rufipennes morio en milieu urbainLa disponibilité de la nourriture d'origine anthropique est liée à la fluctuation à court terme de la présence humaine, et ce plus particulièrement dans les centres urbains. Peu d'études ont exploré les réponses à de telles fluctuations quotidiennes à hebdomadaires, et plus spécifiquement sur la masse corporelle et la condition physique des oiseaux urbains. Nous avons étudié le maintien de la masse corporelle et la condition physique des rufipennes morio (Onycognathus morio) résidant à l'université du Cap, dans la province du Cap occidental, en Afrique du Sud, en dehors de la période de reproduction, en fonction des surfaces imperméabilisées comprises dans leur domaine vital (index du bâti). Nous avons émis l'hypothèse que l'index du bâti est corrélé avec la capacité des rufipennes à maintenir leur masse, elle-même liée à la disponibilité de la nourriture anthropique. Dans le cadre d'un projet de science communautaire focalisé sur le campus universitaire, nous avons estimé les tailles de domaines vitaux et avons combiné ces données avec des obs...

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Managing human disturbance: factors influencing flight-initiation distance of birds in a West African nature reserve

Cited by 26 publications

References 78 publications

Factors influencing the flush response and flight initiation distance of three owl species in the Andaman Islands

Factors influencing the flush response and flight initiation distance of three owl species in the Andaman Islands

Lateralization of vigilance in geese: influence of flock size and distance to the source of disturbance

Anthropogenic food availability and body mass maintenance in urban Red-winged Starlings Onychognathus morio

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