Identification of the breeding season diet of the Common Kestrel,<i>Falco tinnunculus</i>in the north of Iran

Anushiravani, Sina; Roshan, Zahra Sepehri

doi:10.1080/21658005.2017.1333771

Cited by 16 publications

(2 citation statements)

References 21 publications

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“…Among the three, airport avifauna monitoring was conducted for the longest period using a standardized protocol. Nevertheless, BWKs prefer airport habitats, and thus this dataset might have underestimated the population size of EKs, which are found in a variety of habitat types (Navarro‐López et al 2014, Anushiravani and Sepehri Roshan 2017). An advantage of the eBird dataset is that it covers a wider geographic scale (Sullivan et al 2009, Conrad and Hilchey 2011) and thus is likely to reflect population trends in areas outside airports.…”

Section: Discussionmentioning

confidence: 99%

Competition between the black‐winged kite and Eurasian kestrel led to population turnover at a subtropical sympatric site

Chen

Lin

2022

Journal of Avian Biology

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Population expansion of the black-winged kite Elanus caeruleus has been a global trend in recent decades. Since first recorded in Taiwan in 2001, they rapidly occupied plains areas of this subtropical island which has led to interspecific competition with the wintering Eurasian kestrel Falco tinnunculus. In this study, we analyzed historical surveys to estimate the population trends of both species in Taiwan. We then used Pianka's index to quantify the degree of niche overlap based on diet composition and foraging peaks. Finally, we designed an experiment to test the aggressiveness of the two raptors when facing conspecific or heterospecific intruders. Airport avifauna survey (2002)(2003)(2004)(2005)(2006)(2007)(2008)(2009)(2010)(2011)(2012)(2013)(2014)(2015)(2016)(2017) data from eight different airports and eBird data (2000-2019) from 21 hotspot grids both showed population turnover between the two raptors, with a decline in the wintering Eurasian kestrel and an expansion of the black-winged kite. Rodents were the largest share of prey for both species, indicating that the two raptors have a high degree of niche overlap (an overlap index of 0.74 by prey frequency, 0.97 by prey biomass and 0.89 by foraging time). The black-winged kite exhibited higher boldness and aggressiveness toward intruders, with its aggressiveness toward kestrel specimens (2.9 ± 2.4 strikes) significantly higher than that toward kite specimens (1.1 ± 1.8 strikes). Attacks by the black-winged kite may have prompted the Eurasian kestrel to choose other wintering grounds. As a result, the number of wintering kestrels decreased, leading to opposing population trends of the two species.

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Section: Discussionmentioning

confidence: 99%

Competition between the black‐winged kite and Eurasian kestrel led to population turnover at a subtropical sympatric site

Chen

Lin

2022

Journal of Avian Biology

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“…There were also many other prey items that could not be identified with binocular. Various studies have reported 49 prey items (Charter et al, 2008) 172 prey items (Anushiravani and Roshan, 2017b) and 349 prey items (Gao et al, 2009) for common kestrel during breeding season. Considering the abundance of prey species, safe nesting sites and successful breeding; it is indicative that the ecological health at Sir Bani Yas Island is in favour of biodiversity, especially propagation of raptors.…”

Section: Discussionmentioning

confidence: 99%

Potential of Fungal Endophytes to Antagonise Puccinia Striiformis Causing Wheat Yellow Rust

2020

THE JAPS

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Successful breeding is associated with propagation and well-being of the species and requires a healthy and intact ecosystem. However, to analyse these effects, the knowledge of the natural behaviours and variations in the breeding biology of the birds is essential. Common kestrel (Falco tinnunculus) is widely distributed in Asia, Africa and Europe. The current study was designed to evaluate the population trends and breeding success of common kestrel in Sir Bani Yas Island from 2014-2018, and to provide an insight to the survival of this species in a restored habitat. Population of common kestrel was monitored through line transect method by categorising it into three habitat types viz. Mountains, Forests, and Pastures/open area. In each habitat category, two transects of 2,000 meters length and 200 meters width on each side were laid. The population data from three habitat types showed statistically significant difference in preference of habitat types (H-Value = 27.43, DF = 2, P-Value = 0.0000011). The birds showed preference of open/pasture habitats in non-breeding season and mountains during breeding season. The courtship and nesting started during early April and the eggs were laid during late April. The average clutch size was 3.75 ± 0.31 eggs per clutch. The average incubation period was 29.13 ± 0.52 days resulting in average hatchlings of 3.50 ± 0.53 chicks. The eggs were incubated 74.02 ± 1.69 % and were unattended for 24.54 ± 1.64 % of the total incubation period. The finding of this study can be used as future reference to study the breeding success of the species and provide cues for further improvement of the ecosystem conditions by improving the habitat condition on the Island based ecosystems.

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The Kestrel

Dell’Omo¹

2020

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Identification of the breeding season diet of the Common Kestrel,Falco tinnunculusin the north of Iran

Cited by 16 publications

References 21 publications

Competition between the black‐winged kite and Eurasian kestrel led to population turnover at a subtropical sympatric site

Competition between the black‐winged kite and Eurasian kestrel led to population turnover at a subtropical sympatric site

Potential of Fungal Endophytes to Antagonise Puccinia Striiformis Causing Wheat Yellow Rust

The Kestrel

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