Density, habitat selection and breeding biology of Common Buzzards<i>Buteo buteo</i>in an insular environment

Rodríguez, Beneharo; Sivério, Felipe; Rodríguez, Airam; Siverio, Manuel; Hernández, José Joaquín López; Figuerola, Jordi

doi:10.1080/00063650903311526

Cited by 14 publications

(7 citation statements)

References 21 publications

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“…In our study area, as well as in other sites within the archipelago, falcons selected the highest cliffs in comparison to other raptor species ( Rodríguez and Siverio 2006 ; Rodríguez et al 2007 ; this study). On Tenerife, buzzard breeding density is positively related to forested areas ( Rodríguez et al 2010b ), so as forests are usually located at 200–2,000 m a.s.l., it is reasonable that buzzards occupy the highest elevations zones in Teno. In contrast, kestrels occupied lower cliffs than falcons and at lower altitudes than buzzards.…”

Section: Discussionmentioning

confidence: 99%

“…Buzzards’ data correspond to the 2007 season ( Rodríguez et al 2010b ), and for the most abundant species, the common kestrels, nest locations were obtained during 2005–2010 given that the most remote and rugged sectors were surveyed at least 1 year to cover all available habitats for this species. We are aware that raptor density may strongly fluctuate among years due to variability in climate or feeding resources ( Newton 1979 ), but prey availability and climatic stability in the Canary Islands produce no large annual variation in raptor breeding densities (see Siverio 2006 ; Siverio et al 2007 ; Rodríguez et al 2010b ; Siverio et al 2010a ). We may have missed a few nest sites, especially of the abundant kestrels, but we are confident that such omissions represent less than 5% of total nesting sites.…”

Section: Methodsmentioning

confidence: 99%

“…Only some raptor populations, mainly the most threatened, are systematically monitored on the Macaronesian archipelagos ( Donázar et al 2002 ; Palma et al 2004 ; Siverio 2006 ; Gangoso et al 2015 ), and quantitative information on raptor communities, their distributions, and habitat associations are scarce (but see Gangoso 2006 ). In fact, only a few studies quantifying breeding habitat features or nest characteristics of particular species are available for the Canary Islands (see Carrillo and González-Dávila 2005 ; Gangoso 2006 ; Rodríguez and Siverio 2006 ; Rodríguez et al 2007 , 2010b, 2013 ; Gangoso et al 2015 ).…”

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Factors affecting the spatial distribution and breeding habitat of an insular cliff-nesting raptor community

Rodríguez

Sivério

et al. 2017

Current Zoology

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The specific spatial distribution and habitat association—strongly influenced by environmental factors or competitive interactions—are major issues in ecology and conservation. We located and georeferenced nesting sites of five cliff-nesting raptors (Egyptian vulture Neophron percnopterus [a locally extinct species], common buzzard Buteo buteo, osprey Pandion haliaetus, common kestrel Falco tinnunculus, Barbary falcon Falco peregrinus pelegrinoides), and common raven Corvus corax on one of the most biodiverse hotspot within the Canary Islands (Teno, Tenerife). We used generalized linear models to evaluate the factors affecting abundance, richness, and intra- and interspecific interactions. Raptor abundance increased with slope, shrub-covered area, and habitat diversity, and decreased with altitude, and forested and grassed areas. Richness increased with slope and decreased with altitude. Threatened species (osprey, Barbary falcon, and raven) occupied cliffs farther away from houses and roads, and more rugged areas than the non-threatened species. The models suggested that the probability of cliff occupation by buzzards, falcons, and ravens depended only on inter-specific interactions. Buzzard occupation increased with the distance to the nearest raven and kestrel nests, whereas falcons and ravens seek proximity to each other. Teno holds between 75% and 100% of the insular breeding populations of the most endangered species (osprey and raven), indicating the high conservation value of this area. Our study suggests that the preservation of rugged terrains and areas of low human pressure are key factors for raptor conservation and provide basic knowledge on the community structure and habitat associations to develop appropriated management actions for these fragile island populations.

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Section: Methodsmentioning

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Factors affecting the spatial distribution and breeding habitat of an insular cliff-nesting raptor community

Rodríguez

Sivério

et al. 2017

Current Zoology

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“…Norway spruce was also a dominant nesting tree in Finland [88]. In the pre-Alps area in Italy, birds built their nests on sweet chestnut Castanea sativa (tree species dominating in this area) [10,15], but they may also place their nests on rock stony ledges [10,15,89]. In the agrocenoses of Western Poland, buzzards nested in parks, roadside tree alleys, or even on single trees in the fields [12].…”

Section: Breeding Parameters and Nesting Tree Choicementioning

confidence: 99%

The Common Buzzard Buteo buteo Population in a Changing Environment, Central Poland as a Case Study

Gryz

Krauze‐Gryz

2019

Diversity

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Common buzzard is the most abundant bird of prey in Europe, and its population has undergone serious changes. In this study, we focused on a population in Central Poland (study area 105 km2, forests around 24 km2, seven forest complexes) to analyze how certain environmental factors influenced population abundance, breeding parameters, and diet composition. The study was undertaken from 2011 to 2018, and the results were compared with data from two study periods (1982–1992; 2001–2003). Current population density was 3.5 pairs/10 km2 of total area and 14.3 pairs/10 km2 of forested area, it was negatively correlated to the abundance of northern goshawk, and it grew in the last few decades. Mammals were dominant prey (72.6% prey items, 38.6% of biomass), but their share in diet changed following rodent availability. A decrease in the share of voles was recorded, reflecting drop in their abundance and dampening of abundance cycles. Breeding parameters were similar to those in the past, and the number of offspring depended on small rodent availability. Buzzards adapted to changes in the stand structure, i.e., when share of Scots pine decreased, they chose it as their nesting tree less frequently. All this showed that buzzard is a very adaptable species.

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“…stora skillnaden i antal par som genomför häckning i våra bokskogar under bra respektive dåliga år. Skillnaden mellan åren var till synes större än den var i Västergötland under motsvarande period (1996( -2010( , Ericsson m.fl. 2014.…”

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Häckningsframgång hos ormvråk Buteo buteo och kattuggla Strix aluco i Varbergs kommun 1984–2016

Kanje¹,

Kanje²

2018

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In 1984–2016 we studied the habitat choice, nest placement and breeding success of Common Buzzard Buteo buteo and Tawny Owl Strix aluco in the municipality of Varberg in southwest Sweden (57°10'N, 12°10'E). The analyses are based on 1,512 successful breeding attempts of Common Buzzard, and 1,387 of Tawny Owl. The average number of young per successful breeding was 1.74 and 2.86, respectively. The variation between years was highly correlated between the two species, suggesting a common food source. In both species the between-year variation in clutch size was particularly large in beech forest territories, most likely caused by the effect of beech mast years on local rodent populations. The breeding density of Common Buzzard was particularly high in 1990–1995, coinciding with large areas of farmland set-aside. In the Common Buzzard, the yearly average number of young per clutch declined significantly with yearly average hatching date.

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Density, habitat selection and breeding biology of Common BuzzardsButeo buteoin an insular environment

Cited by 14 publications

References 21 publications

Factors affecting the spatial distribution and breeding habitat of an insular cliff-nesting raptor community

Factors affecting the spatial distribution and breeding habitat of an insular cliff-nesting raptor community

The Common Buzzard Buteo buteo Population in a Changing Environment, Central Poland as a Case Study

Häckningsframgång hos ormvråk Buteo buteo och kattuggla Strix aluco i Varbergs kommun 1984–2016

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