scholarly journals New records on the distribution of three rodent species in NE Portugal from barn owl (Tyto alba) diet analysis.

2014 ◽  
Vol 22 ◽  
pp. 100-104 ◽  
Author(s):  
Hélia Marisa Vale-Gonçalves ◽  
João Alexandre Cabral
Keyword(s):  
New Records ◽  
Barn Owl ◽  
Rodent Species ◽  
Diet Analysis ◽  
Tyto Alba

scholarly journals COMPARATIVE DIET ANALYSIS OF BARN OWL (TYTO ALBA) AND LONG- EARED OWL (ASIO OTUS) IN A HABITAT ISLAND IN NORTH-CENTRAL TEXAS

2020 ◽  
Vol 72 (1) ◽  
Author(s):  
Jaime E. Jiménez ◽  
Matthew K. Jones ◽  
Kaitlyn Stoddart ◽  
Sentell Dickson ◽  
Abigail Chapman ◽  
...  
Keyword(s):  
Tallgrass Prairie ◽  
Barn Owl ◽  
Diet Analysis ◽  
Tyto Alba ◽  
North Central ◽  
Environmental Learning ◽  
North Central Texas ◽  
Habitat Island ◽  
The Face ◽  
Central Texas

Abstract Predator-prey interactions often define the coexistence of species in space and time. In this research, we are filling a regional gap in knowledge of diet composition of the barn owl (Tyto alba) and the long-eared owl (Asio otus). The study was conducted at the Lewisville Lake Environmental Learning Area (LLELA), a patch of tallgrass prairie and post oak forest surrounded by areas with large anthropogenic modifications in north-central Texas. We examined the remains found in owl pellets collected September 2016 to March 2017. Small mammals, mainly rodents, constituted 100% of the T. alba and 98.5% of the A. otus diet. The hispid cotton rat (Sigmodon hispidus) was the most common prey detected (68.2% for T. alba and 89.0% for A. otus). Diet niche breadth of T. alba was broader than that of A. otus (0.47 and 0.06, respectively), whereas mean prey size was smaller in the T. alba diet. Diet overlap between these owls was high (0.96), likely because they hunt similarly at night, on the wing, and the prey species have limited diversity. Most rodents eaten were juveniles and the sex ratio of prey was even in both owls’ diets. We highlight the value of conducting studies in such a unique and relatively pristine environment in the face of multiple threats. Additionally, although the occurrence of A. otus is rare and infrequent in the study area, we were still able to detect a difference in diet between the ubiquitous T. alba and A. otus.

scholarly journals Barn owl (Tyto alba) predation on small mammals and its role in the control of hantavirus natural reservoirs in a periurban area in southeastern Brazil

2008 ◽  
Vol 68 (4) ◽  
pp. 733-740 ◽  
Author(s):  
L. Magrini ◽  
KG. Facure
Keyword(s):  
Small Mammals ◽  
Barn Owl ◽  
Rodent Species ◽  
Southeastern Brazil ◽  
Hantavirus Infection ◽  
Tyto Alba ◽  
Food Items ◽  
High Incidence ◽  
Hantavirus Reservoir ◽  
Owl Pellets

The aim of this study was to inventory the species of small mammals in Uberlândia, Minas Gerais, Brazil, based on regurgitated pellets of the barn owl and to compare the frequency of rodent species in the diet and in the environment. Since in the region there is a high incidence of hantavirus infection, we also evaluate the importance of the barn owl in the control of rodents that transmit the hantavirus. Data on richness and relative abundance of rodents in the municipality were provided by the Centro de Controle de Zoonoses, from three half-yearly samplings with live traps. In total, 736 food items were found from the analysis of 214 pellets and fragments. Mammals corresponded to 86.0% of food items and were represented by one species of marsupial (Gracilinanus agilis) and seven species of rodents, with Calomys tener (70.9%) and Necromys lasiurus (6.7%) being the most frequent. The proportion of rodent species in barn owl pellets differed from that observed in trap samplings, with Calomys expulsus, C. tener and Oligoryzomys nigripes being consumed more frequently than expected. Although restricted to a single place and based on few individuals, the present study allowed the inventory of eight species of small mammals in Uberlândia. The comparison of the relative frequencies of rodent species in the diet and in the environment indicated selectivity. The second most preyed upon species was N. lasiurus, the main hantavirus reservoir in the Cerrado biome. In this way, the barn owl might play an important role in the control of this rodent in the region, contributing to the avoidance of a higher number of cases of hantavirus infection.

Prey groups in the pellets of the barn owl Tyto alba (Scopoli) in the Nigerian savanna

2001 ◽  
Vol 39 (1) ◽  
pp. 38-44 ◽  
Author(s):  
L. M. Lekunze ◽  
A. U. Ezealor ◽  
T. Aken'ova
Keyword(s):  
Barn Owl ◽  
Tyto Alba ◽  
Nigerian Savanna

Homing Instinct of a Female Barn Owl (Tyto alba)

2019 ◽  
Vol 53 (3) ◽  
pp. 343 ◽  
Author(s):  
Safwan Saufi ◽  
Shakinah Ravindran ◽  
Hasber Salim
Keyword(s):  
Barn Owl ◽  
Tyto Alba

scholarly journals Nidicolous beetle species richness is driven by Barn Owl’s nests occupancy and landscape structure

2021 ◽  
Author(s):  
Vivien Cosandey ◽  
Robin Séchaud ◽  
Paul Béziers ◽  
Yannick Chittaro ◽  
Andreas Sanchez ◽  
...  
Keyword(s):  
Species Richness ◽  
Landscape Structure ◽  
Barn Owl ◽  
Arthropod Community ◽  
Tyto Alba ◽  
Nest Material ◽  
Crop Fields ◽  
Nest Boxes ◽  
Bird Droppings ◽  
Barn Owls

AbstractBird nests are specialized habitats because of their particular composition including nest detritus and bird droppings. In consequence, they attract a specialized arthropod community considered as nidicolous, which includes species only found in bird nests (strictly nidicolous) or sometimes found in bird nests (facultatively nidicolous). Because the factors influencing the entomofauna in bird nests are poorly understood, in autumn 2019, we collected nest material in 86 Barn Owl (Tyto alba) nest boxes. We investigated whether the invertebrate species richness was related to Barn Owl nest box occupancy, the density of available nest boxes and the landscape structure. We found 3,321 nidicolous beetle specimens belonging to 24 species. Species richness of strictly nidicolous beetles was 2.7 times higher in nest boxes occupied by a family of Barn Owls the previous spring compared to unoccupied nest boxes. It was also higher in sites that were more often occupied by Barn Owls in the five previous years and in areas surrounded by a higher proportion of crop fields. For facultatively nidicolous beetles, the density of Barn Owl nest boxes enhanced the species richness. In conclusion, our study suggests that the strictly nidicolous beetles benefit from occupied nest boxes of Barn Owls, whereas facultatively nidicolous beetles look for nest boxes independently of whether Barn Owls occupy them. Our study highlights the importance of bird nests for a suite of invertebrates.

Vertebrate Remains in Pellets of the Barn Owl, Tyto Alba, From Planet Downs Station, South-Western Queensland.

1981 ◽  
Vol 8 (1) ◽  
pp. 181 ◽  
Author(s):  
A Valente
Keyword(s):  
Mus Musculus ◽  
Prey Item ◽  
Barn Owl ◽  
Tyto Alba ◽  
Sminthopsis Macroura

Vertebrate remains in a collection of barn owl (Tyto alba) pellets from south-western Queensland were largely those of mammals, including Rattus villosissimus, Mus musculus, Leggadina forresti, Planigale tenuirostris, Sminthopsis macroura and S. crassicaudata. R. villosissimus was the most common prey item. P. tenuirostris had not been recorded previously from the area. Other vertebrate remains included those of birds, lizards and frogs. Some insects were also found in the pellets.

Reproduction of the Barn Owl (Tyto alba) in Cyprus (Aves: Strigiformes)

2017 ◽  
Vol 63 (4) ◽  
pp. 369-371 ◽  
Author(s):  
Nicolaos Kassinis ◽  
Alexandre Roulin
Keyword(s):  
Barn Owl ◽  
Tyto Alba
Sign in / Sign up

Export Citation Format

Share Document