Breeding and Nesting Biology in Raptors

Tapia, Luis; Zuberogoitia, Íñigo

doi:10.1007/978-3-319-73745-4_3

Cited by 33 publications

(25 citation statements)

References 157 publications

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“…The present study reports 29 species accounting for 42% of the total diurnal raptors in India. This may be attributed to the heterogeneity of landscapes supporting an array of habitats comprising of intact forest patches, protected areas (Jasrota, Nandini, and Surinsar-Mansar Wildlife sanctuaries), rocky ridges, vast fallows and agricultural fields, water bodies (rivers, streams, and ponds), floodplains and urban habitats infused with green belt parks, urban forests and green corridors that provide favorable space for nesting, breeding, perching and roosting and thus high raptor richness and abundance [3,81–84]. Landscape attributes play an important role in determining avian richness and abundance [85–86] which is high in mosaic lands [87–89] limited by suitable breeding habitat and specific nest-site requirements [1,3].…”

Section: Discussionmentioning

confidence: 99%

Effect of landscape heterogeneity on diurnal raptor community richness and diversity in Jammu Shiwaliks, Jammu and Kashmir

Sharma¹,

Kumar

Sohil³

et al. 2021

Preprint

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In this study, we examined the richness and diversity of diurnal raptors along with their foraging guilds across different land uses in a sub-tropical landscape during December 2016 to November 2018. A total of 80 vantage points, 19 line transects and 36 road transects were sampled in 33 sites in six different habitat types in the study area where we recorded 3409 individuals of 29 diurnal raptors in 2 orders and 3 families. Significant variation in bird abundance was observed among different habitat types, farmlands being more specious followed by pure forests, water bodies and forest-farmland interfaces. Among the seasons, summers recorded higher abundance followed by winter, monsoon and post-monsoon. A low diversity value (H′=2.22) however was observed for the whole study area with mean monthly highest recorded during February (H′=2.44) and least during June (H′=1.85). Most of the raptors observed for their food types and foraging were predators (n=22) and rest were carrion feeders (n=22). Fourteen among all observed diurnal raptors were winter visitors and 13 residents with 9 reported globally threatened. A moderately high richness of diurnal raptors substantiate high conservation value of these habitats especially the forest patches and farmlands and thus calls for effective management strategies for the conservation and proliferation of raptors in sub-tropical areas of Jammu region.

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Section: Discussionmentioning

confidence: 99%

Effect of landscape heterogeneity on diurnal raptor community richness and diversity in Jammu Shiwaliks, Jammu and Kashmir

Sharma¹,

Kumar

Sohil³

et al. 2021

Preprint

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“…Again, the explanation for this pattern seems to be related to individual competitive abilities. Territorial birds are on average of higher dominance rank compared to non‐territorial ones (Penteriani et al 2011, Tapia and Zuberogoitia 2018, van Overveld et al 2018), which may provide a competitive advantage during food exploitation at predictable feeding sites and/or their territories may be located in food‐rich areas. In addition, territorial adults may represent a subset of high‐quality birds with well‐developed foraging skills and environmental knowledge, allowing them to perform better in periods of high abundance of natural prey.…”

Section: Discussionmentioning

confidence: 99%

Too much is bad: increasing numbers of livestock and conspecifics reduce body mass in an avian scavenger

Donázar

Barbosa

García‐Alfonso

et al. 2020

Ecological Applications

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Individual traits such as body mass can serve as early warning signals of changes in the fitness prospects of animal populations facing environmental impacts. Here, taking advantage of a 19‐yr monitoring, we assessed how individual, population, and environmental factors modulate long‐term changes in the body mass of Canarian Egyptian vultures. Individual vulture body mass increased when primary productivity was highly variable, but decreased in years with a high abundance of livestock. We hypothesized that carcasses of wild animals, a natural food resource that can be essential for avian scavengers, could be more abundant in periods of weather instability but depleted when high livestock numbers lead to overgrazing. In addition, increasing vulture population numbers also negatively affect body mass suggesting density‐dependent competition for food. Interestingly, the relative strength of individual, population and resource availability factors on body mass changed with age and territorial status, a pattern presumably shaped by differences in competitive abilities and/or age‐dependent environmental knowledge and foraging skills. Our study supports that individual plastic traits may be extremely reliable tools to better understand the response of secondary consumers to current and future natural and human‐induced environmental changes.

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“…Adverse weather conditions also influence reproduction (Newton 1979, 1998, Tapia & Zuberogoitia 2018), either directly via nestling mortality (Redpath et al . 2002) or indirectly by reducing prey availability (Morrison et al .…”

mentioning

confidence: 99%

“…In the absence of anthropogenic stressors, available food and suitable nesting sites are the two most important factors affecting raptor reproduction (Newton 1979). Food availability is related to habitat because some habitat types produce more prey than others, which in turn generates relationships among habitat, prey and reproductive rate (Tapia et al 2007, Tapia & Zuberogoitia 2018. For example, wetland vegetative cover positively influences the reproductive rate of Eurasian Eagle-Owls Bubo bubo, probably through enhanced prey abundance, whereas urban land cover and rainfall negatively affect it (Bionda & Brambilla 2012).…”

mentioning

confidence: 99%

Habitat and weather conditions influence reproductive rates of suburban and rural Red‐shouldered Hawks Buteo lineatus

Dykstra¹,

Hays²,

Simon³

et al. 2020

Ibis

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Both habitat and weather can strongly influence reproductive rates of birds. We measured reproductive rates of suburban and rural Red‐shouldered Hawks Buteo lineatus in southern Ohio, USA, from 1997 to 2016, and then tested how weather conditions and habitat in the areas surrounding the nest‐sites were related to two measures of reproductive rate. Reproductive rates of Red‐shouldered Hawks did not differ between the suburban and rural study areas, and were relatively stable from year to year. Suburban Red‐shouldered Hawks produced 2736 young in 1773 nesting attempts (i.e. nest with eggs) at 302 territories (1.54 young per nesting attempt), and rural‐nesting Hawks produced 996 young in 640 nesting attempts at 108 territories (1.56 young per nesting attempt). Annual nesting success averaged 58.9 ± 1.1% for suburban birds and 58.9 ± 2.1% for rural birds. Several factors influenced Red‐shouldered Hawk reproductive rates, measured as either the number of young per nesting attempt or the percentage of nesting attempts that were successful. Higher air temperatures during May (the nestling period) and increasing amounts of coniferous forest were associated with higher reproductive rates, whereas increasing April air temperatures and increasing amount of grassland cover had the opposite effect. Land cover variables associated with suburban landscapes, such as the amount of residential development, did not influence the number of young per nesting attempt or nesting success, suggesting that Red‐shouldered Hawks are welladapted to human‐dominated landscapes in southern Ohio. Our study also illustrates the value of long‐term datasets for improving our understanding of factors that affect raptors’ demographic parameters.

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Breeding and Nesting Biology in Raptors

Cited by 33 publications

References 157 publications

Effect of landscape heterogeneity on diurnal raptor community richness and diversity in Jammu Shiwaliks, Jammu and Kashmir

Effect of landscape heterogeneity on diurnal raptor community richness and diversity in Jammu Shiwaliks, Jammu and Kashmir

Too much is bad: increasing numbers of livestock and conspecifics reduce body mass in an avian scavenger

Habitat and weather conditions influence reproductive rates of suburban and rural Red‐shouldered Hawks Buteo lineatus

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