Red Kites<i>Milvus milvus</i>wintering in their natal area: demographic, environmental, and temporary factors affecting spatiotemporal behaviour patterns

Škrábal, Jan; Literák, Ivan; Dostál, Marek; Raab, Rainer; Horal, David; Matušík, Hynek; Spakovszky, Péter

doi:10.1080/00063657.2022.2103096

Cited by 4 publications

(9 citation statements)

References 60 publications

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“…This phenomenon also has been reported in Spain (Vidal-Mateo et al 2021, García-Macía et al 2022), where during the past several decades a decreasing number of Red Kites from central and northern Europe wintered. In contrast to the findings of Heredia et al (1991), we observed that both breeding and nonbreeding birds used communal roosts and changed them during the winter period (Škrábal et al 2021). However, one nonbreeding adult bird roosted alone during the study period in Slovakia (see Fig.…”

Section: Resultscontrasting

confidence: 99%

“…The large number of wintering Red Kites in our study area may also reflect the relatively high breeding density of Red Kites in the study region (Keller et al 2020) and the fact that a significant fraction of birds hatched here remained in their natal regions (Nemček 2013, Škrábal et al 2021). We note that 24 (approximately 46%) of our telemetry-tagged kites hatched and stayed within the tripoint border region.…”

Section: Resultsmentioning

confidence: 86%

“…To avoid double counting of any individual for the total estimation, we then included only those data from ≥50 km from the observed nocturnal roosts. Fifty km was the maximum foraging distance from a communal roost, as established by telemetry data (Heredia et al 1991, Škrábal et al 2021). The average maximum distance from a roost for the 24 tagged kites was 14.9 km (range: 1.5–33.4 km).…”

Section: Methodsmentioning

confidence: 99%

“…A portion of the Red Kite population from Austria, the Czech Republic, and Slovakia migrates south to wintering grounds in southern Europe, from the Iberian Peninsula to Greece. The remaining birds overwinter close to their natal areas (Litera ´k et al 2019, 2022a, Škra ´bal et al 2021, Panter et al 2022.…”

Section: Introductionmentioning

confidence: 99%

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Integrated Approach Improves Monitoring of Wintering Red Kites in Central Europe

Dostál,

Literák,

Horal

et al. 2023

Journal of Raptor Research

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The Red Kite (Milvus milvus) is a common raptor in suitable areas of Austria, the Czech Republic, and Slovakia during the nonbreeding season. However, the exact number of birds wintering in these countries remains unknown. Through an integrated approach using satellite telemetry, direct field surveys at nocturnal roosts, and citizen science databases, we estimated the wintering population of Red Kites in this area during the winter of 2020/2021. Based on three surveys taking place at the beginning (28 November 2020), middle (9 January 2021), and end (5 February 2021) of winter, respectively, we counted 566, 558, and 536 Red Kites. The observations from online citizen science databases mostly appeared to correspond with the area of communal roost sites. Using our combined approach, the estimates of wintering Red Kites were determined as minimum numbers in the study area. A comparison of historical data (from the second half of the 20th and beginning of the 21st centuries, respectively) and our own results suggests that the wintering population of Red Kites in the study area has increased substantially. This dynamic could be caused by changes in climatic conditions, a shift of the birds' breeding range in Europe, changes in migration behavior and/or food availability, and/or conservation efforts.

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Section: Resultscontrasting

confidence: 99%

Section: Resultsmentioning

confidence: 86%

Section: Methodsmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

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Integrated Approach Improves Monitoring of Wintering Red Kites in Central Europe

Dostál,

Literák,

Horal

et al. 2023

Journal of Raptor Research

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“…Additionally, personal field observation in situ showed that the bird from the Evros Delta roosted communally along with dozens of Marsh Harriers within areas of abandoned fields surrounded by Phragmites reedbed and clumps of Tamarix. Communal roosting is a phenomenon that can be frequently observed in Marsh Harriers and other birds of prey, usually during the winter period (Alivizatos et al 2011; Kitowski 2007; Škrábal et al 2021; Verma and Prakash, 2007). This behavior implies many ecological and evolutionary consequences in birds and entails conservation concerns (Beauchamp 1999).…”

Section: Discussionmentioning

confidence: 99%

Ranging Behaviour and Habitat Selection of Sedentary Western Marsh Harriers (Circus aeruginosus) in the Mediterranean Estuarine Landscape.

Literák,

Sidiropoulos,

Škrábal

et al. 2023

Waterbirds

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The main reasons for the global biodiversity decline are the destruction and degradation of natural habitats caused by human activity by transforming them into agricultural lands. Although this transformation has been linked with decreased biodiversity, some bird species might have learned how to benefit from newly created habitats. We studied home ranges and habitat preferences for daytime activity and roosting of two sedentary Marsh Harriers (Circus aeruginosus) from the Evros Delta and the Mediterranean coast of the Iberian Peninsula using the results of satellite telemetry tracking. The size of the home range for the bird tagged in the Evros Delta was 158 km 2 (dynamic Brownian Bridge Movement Model, 95 %), while for the Iberian bird, this was more than nine times greater (1488 km 2 ). Monthly home ranges noticeably increased during winter in Evros Delta in both years.. The birds chose habitats such as non-irrigated arable land, watercourses, inland marshes, and dump sites for daytime activity. In contrast, they avoided habitats like rice fields and complex cultivation patterns. Water-related natural habitats like inland and salt marshes were intensively used as nocturnal roosts. Despite the general negative effect of human pressure, our results showed that the species seemed to tolerate and benefit from some types of humanized environments of estuarine landscapes.

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A lifelong floater: the Red Kite female that never met a mate

Literák

Škrábal

Maderič

2022

Ringing & Migration

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Red KitesMilvus milvuswintering in their natal area: demographic, environmental, and temporary factors affecting spatiotemporal behaviour patterns

Cited by 4 publications

References 60 publications

Integrated Approach Improves Monitoring of Wintering Red Kites in Central Europe

Integrated Approach Improves Monitoring of Wintering Red Kites in Central Europe

Ranging Behaviour and Habitat Selection of Sedentary Western Marsh Harriers (Circus aeruginosus) in the Mediterranean Estuarine Landscape.

A lifelong floater: the Red Kite female that never met a mate

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