The Barn Owl

Southern, H. N.; Bunn, D. S.; Warburton, A. B.; Wilson, Rebecca

doi:10.2307/4470

Cited by 32 publications

(2 citation statements)

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“…SSSIs are numerous, are managed for biodiversity, and contain a high proportion of HNV habitat, but were not found to protect breeding birds against local extinction. A possible explanation for this is their small median size, which, at 29 ha, is less than half that of the average farm holding in the United Kingdom of 81 ha (Defra, 2020) and much smaller than the home ranges (territory) of many birds of prey (e.g., barn owls: Bunn et al., 2010). While these species are rarely the features for which SSSIs are designated, this illustrates how many SSSIs are incapable of supporting even single pairs of larger bodied breeding species, let alone viable populations.…”

Section: Discussionmentioning

confidence: 99%

The effectiveness of UK protected areas in preventing local extinctions

Gardner,

Baker,

Mosedale

et al. 2023

Conservation Letters.

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Protected areas (PAs) are a core component in global efforts to prevent further declines in biodiversity. We examine whether the United Kingdom's PA portfolio has reduced local extinctions of breeding birds and consider how the characteristics of different PA designations may have affected conservation outcomes. We use breeding bird atlas data to calculate the proportion of species in each 10 × 10‐km grid cell confirmed as breeding in 1988–1991 but not in 2008–2011. We find that the protection offered by PAs is little to no different from that of the wider landscape and, depending on the type of PA, attribute this to PAs being either too small or not managed for biodiversity outcomes. To meet the ambitious new global targets for expanding PA coverage set at the 15th UN Biodiversity Conference, all countries need to monitor and ensure PA effectiveness; high PA coverage does not guarantee that biodiversity is protected.

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Section: Discussionmentioning

confidence: 99%

The effectiveness of UK protected areas in preventing local extinctions

Gardner,

Baker,

Mosedale

et al. 2023

Conservation Letters.

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“…Owls, like other birds of prey, have the potential to be infected via consumption of infected prey. 12 Postmortem findings expected with mycobacteriosis can vary among species but often include loss of body weight (owing to the chronicity of the disease), hepatosplenomegaly, and disseminated granulomatous inflammation commonly involving the liver, spleen, intestines, lungs, air sacs, and thoracic and abdominal cavities. 13 More discrete granulomas can range from pinpoint to several centimeters in diameter.…”

Section: Commentsmentioning

confidence: 99%

Pathology in Practice

Shrader¹,

Ellis²,

Howerth³

2014

javma

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A 95-g (0.21-lb) female eastern screech owl (Megascops asio) was found dead in Glynn County, Ga. The bird was either subadult or adult on the basis of feathering and time of year. It was submitted to the Southeastern Cooperative Wildlife Disease Study, College of Veterinary Medicine, University of Georgia, for testing for West Nile virus (WNV) infection and necropsy. There was no evidence of trauma, and no other dead birds were found in the immediate vicinity.

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Restricted range of ocular accommodation in barn owls (Aves:Tytonidae)

et al. 1991

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Summary.In an examination of the focusing abilities of 15 species of owls, the North American barn owl, Tyto alba pratincola (Bonaparte 1838), was an outstanding accommodator, having a range of accommodation exceeding 10 diopters . Using comparable methods, we examined the accommodation of 4 specimens of the Australian barn owl, Tyto alba delicatula (Gould 1837). We failed to elicit accommodation greater than two diopters, and most stimuli failed to evoke any discernable accommodation at all. Furthermore, examination of other Australian tytonid owls, the grass owl, T. longimembris, the sooty owl, T. tenebricosa, and both the mainland and Tasmanian subspecies of the masked owl, T. novaehollandiae novaehollandiae and T. novaehollandiae castanops, also failed to reveal anything but very moderate accommodative ranges. We conclude that the outstanding accommodative ability of the American barn owl is truly an exception to the modest accommodative abilities of the tytonid owls generally.

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The Barn Owl

Cited by 32 publications

References 0 publications

The effectiveness of UK protected areas in preventing local extinctions

The effectiveness of UK protected areas in preventing local extinctions

Pathology in Practice

Restricted range of ocular accommodation in barn owls (Aves:Tytonidae)

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