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57 results for “Tyto alba”
Figure 6 in Micromammalian distribution and abundance in the Western Cape Province, South Africa, as evidenced by Barn owls Tyto alba (Scopoli)
Figure 6. Dominant species in quarter-degree squares where the micromammalian sample comprises>100 individuals. Blank squares yielded samples of fewer than 100 individuals. Ch, Cryptomys hottentotus; Da, Desmodillus auricularis; Mm, Mus minutoides; Mv, Myosorex varius; Oi, Otomys irroratus; Rp, Rhabdomys pumilio; Sv, Suncus varilla; Ta, Tatera afra.
Figure 1 in Micromammalian distribution and abundance in the Western Cape Province, South Africa, as evidenced by Barn owls Tyto alba (Scopoli)
Figure 1. Location of the Western Cape Province in South Africa (A) and of Western Cape Province quarterdegree squares yielding Tyto alba pellet samples discussed in this paper (B).
Figure 5 in Micromammalian distribution and abundance in the Western Cape Province, South Africa, as evidenced by Barn owls Tyto alba (Scopoli)
Figure 5. Distribution of Gerbillinae (A, B) and Soricidae (C–F) whose remains have been found in Tyto alba pellets from 10 or more Western Cape Province quarter-degree squares. White circles indicate dominance in squares yielding remains of at least 100 individuals.
Figure 7 in Micromammalian distribution and abundance in the Western Cape Province, South Africa, as evidenced by Barn owls Tyto alba (Scopoli)
Figure 7. Significant correlation of seasonal variation in percentage representation of Suncus varilla and Steatomys krebsii and climate variables in the De Hoop Nature Reserve (Geelbek and Bottelary). (A) Same-season rainfall and proportions of S. varilla; (B) same-season minimum monthly temperature and S. krebsii; (C) previous-season minimum monthly temperature and S. varilla. See text for further details.
Figure 3 in Micromammalian distribution and abundance in the Western Cape Province, South Africa, as evidenced by Barn owls Tyto alba (Scopoli)
Figure 3. Distribution of Murinae whose remains have been found in Tyto alba pellets from 10 or more Western Cape Province quarter-degree squares. White circles indicate dominance in squares yielding remains of at least 100 individuals.
Figure 2 in Micromammalian distribution and abundance in the Western Cape Province, South Africa, as evidenced by Barn owls Tyto alba (Scopoli)
Figure 2. Distribution of Chrysochloridae (A), Macroscelididae (B), Bathyergidae (C, D) and Vespertilionidae (E) whose remains have been found in Tyto alba pellets from 10 or more Western Cape Province quarter-degree squares. White circles indicate dominance in squares yielding remains of at least 100 individuals.
Figure 4 in Micromammalian distribution and abundance in the Western Cape Province, South Africa, as evidenced by Barn owls Tyto alba (Scopoli)
Figure 4. Distribution of Otomyinae (A–C) and Dendromurinae (D–F) whose remains have been found in Tyto alba pellets from 10 or more Western Cape Province quarter-degree squares. White circles indicate dominance in squares yielding remains of at least 100 individuals.
Figure 3 in Food habits of the barn owl Tyto alba in the National Reserve Pampa del Tamarugal, Atacama Desert, North Chile
Figure 3. Variation of small mammal diversity in the diet of Tyto alba along Chile, measured using the Shannon– Wiener index (H9). (a) Variation across the latitudinal gradient; (b) variation across the rainfall gradient.
Figure 1 in Food habits of the barn owl Tyto alba in the National Reserve Pampa del Tamarugal, Atacama Desert, North Chile
Figure 1. Map of South America, showing the 10 study sites along Chile: 1, Tamarugal; 2, Chiu-Chiu; 3, Fray Jorge; 4, Puchuncavı´; 5, La Campana; 6, La Dehesa; 7, Baños del Flaco; 8, Burca; 9, Lastarria; 10, Torres del Paine.
Figure 2 in Food habits of the barn owl Tyto alba in the National Reserve Pampa del Tamarugal, Atacama Desert, North Chile
Figure 2. Rarefaction curve for the species richness found in the pellets of the barn owl (mean and standard deviations) based on the number of replicates sampled. The asymptotic curve indicates that total species richness in the Tamarugal was reached after ca 63 samples. Calculation was performed using the EstimateS 7.5 program.
The stability implications of drag minimization by tail action modelled in the gliding barn owl (<em>Tyto alba</em>)
Open the record for dataset details and reuse information.
FIGURA 1 in MAMÍFEROS PEQUEÑOS EN LA DIETA DE LA LECHUZA TYTO ALBA (STRIGIFORMES: TYTONIDAE) EN DOS LOCALIDADES DEL OCCIDENTE DE ECUADOR, CON AMPLIACIÓN DISTRIBUCIONAL DE ICHTHYOMYS HYDROBATES (RODENTIA: CRICETIDAE)
FIGURA 1: Ubicación de los dos sitios de estudio en el occidente de Ecuador.
Downstream data for recombination inferrence in the barn owl (Tyto alba)
<p>Downstream data for the publication "<strong>The recombination landscape of the barn owl, from families to populations</strong>". </p> <p>Use with <a href="https://github.com/topalw/Recombination_barn_owl">https://github.com/topalw/Recombination_barn_owl</a></p>
Figure 2 in Barn Owl (Tyto alba) prey in Evros (Greece) and the discovery of a new mammal for the Greek fauna
Figure 2. (a) Partial skull of Myomimus roachi. (b) Hemimandibles of Myomimus roachi. Scale bar = 10 mm.
Figure 3 in Barn Owl (Tyto alba) prey in Evros (Greece) and the discovery of a new mammal for the Greek fauna
Figure 3. (a) Partial Skull of Sorex minutus. (b) Hemimandibles of Sorex minutus. Scale bar = 10 mm.
Data from: Double brooding and offspring desertion in the barn owl (Tyto alba)
Many bird species produce two annual broods during a single breeding season. However, not all individuals reproduce twice in the same year suggesting that double brooding is condition-dependent. In contrast to most raptors and owls, the barn owl Tyto alba produces two annual clutches in most worldwide distributed populations. Nevertheless, the determinants of double brooding are still poorly studied. We performed such a study in a Swiss barn owl population monitored between 1990 and 2014. The annual frequency of double brooding varied from 0 to 14% for males and 0 to 59% for females. The likelihood of double brooding was higher when individuals initiated their first clutch early rather than late in the season and when males had few rather than many offspring at the first nest. Despite the reproductive benefits of double brooding (single- and double-brooded individuals produced 3.97 ± 0.11 and 7.07 ± 0.24 fledglings, respectively), double brooding appears to be traded off against offspring quality because at the first nest double-brooded males produced poorer quality offspring than single-brooded males. This might explain why females desert their first mate to produce a second brood with another male without jeopardizing reproductive success at the first nest. Furthermore, the reproductive cycle being very long in the barn owl (120 d from start of laying to offspring independence), selection may have favoured behaviours that accelerate the initiation of a second annual brood. Accordingly, half of the double-brooded females abandoned their young offspring to look for a new partner in order to initiate the second breeding attempt, 9.48 d earlier than when producing the second brood with the same partner. We conclude that male and female barn owls adopt different reproductive strategies. Females have more opportunities to reproduce twice in a single season than males because mothers are not strictly required during the entire rearing period in contrast to fathers. A high proportion of male floaters may also encourage females to desert their first brood to re-nest with a new male who is free of parental care duties.
FIGURE 5 in Glaucalges tytonis sp. n. (Analgoidea, Xolalgidae) from the barn owl Tyto alba (Strigiformes, Tytonidae): compiling morphology with DNA barcode data for taxon descriptions in mites (Acari)
FIGURE 5. Morphological differences between Glaucalges tytonis sp. n. (left) and G. attenuatus (right). A – male hysteronotum, B – epimerites I of male, C – female hysteronotal shield with associated setae.
FIGURE 7 in Glaucalges tytonis sp. n. (Analgoidea, Xolalgidae) from the barn owl Tyto alba (Strigiformes, Tytonidae): compiling morphology with DNA barcode data for taxon descriptions in mites (Acari)
FIGURE 7. Idiosoma dimensions in Glaucalges tytonis sp. n. (white circles, N=12) and G. attenuatus (black circles, N=12).
FIGURE 3 in Glaucalges tytonis sp. n. (Analgoidea, Xolalgidae) from the barn owl Tyto alba (Strigiformes, Tytonidae): compiling morphology with DNA barcode data for taxon descriptions in mites (Acari)
FIGURE 3. Glaucalges tytonis sp. n., female. A – ventral view, B – dorsal view. CO – copulatory opening.
FIGURE 2 in Glaucalges tytonis sp. n. (Analgoidea, Xolalgidae) from the barn owl Tyto alba (Strigiformes, Tytonidae): compiling morphology with DNA barcode data for taxon descriptions in mites (Acari)
FIGURE 2. Distal podomeres of Glaucalges tytonis sp. n., dorsal view, male. Designations of setae after Gaud and Atyeo (1996). A – tarsus I, B – tibia and tarsus II, C – tarsus III, D – tarsus IV.
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