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157 results for “roosts”
Fig. 2 in Assessing the distribution, roosting site characteristics, and population of Pteropus lylei in Thailand
Fig. 2. Pteropus lylei roosting sites and foraging zones; questionnaire respondents and bat hunting zones are marked in each sub-district.
FIG. 8 in Extraordinary Local Diversity of Disk-winged Bats (Thyropteridae: Thyroptera) in Northeastern Peru, with the Description of a New Species and Comments on Roosting Behavior
FIG. 8. Roost of Thyroptera wynneae in secondary growth at the Centro de Investigaciones Jenaro Herrera, Loreto, Peru. Two bats occupied the dark interior of this dead Cecropia leaf (arrows), which was hanging in understory vegetation by its petiole about 2 m above the ground. One specimen was captured in a butterfly net placed underneath the leaf, but the other bat escaped. Cecropia (Cecropiaceae) is a speciose genus of trees commonly found in secondary vegetation throughout the Neotropics, where hanging dead leaves like this one are abundant in the subcanopy and understory.
FIG. 4 in Extraordinary Local Diversity of Disk-winged Bats (Thyropteridae: Thyroptera) in Northeastern Peru, with the Description of a New Species and Comments on Roosting Behavior
FIG. 4. Dorsal views of the skulls of A, Thyroptera devivoi (ROM 35588♂); B, Thyroptera discifera (AMNH 16686♀); C, Thyroptera lavali (ROM 104026♀); D, Thyroptera tricolor (AMNH 273160♀); E, Thyroptera wynneae (CEBIOMAS 237♂, holotype). Scale bar = 5 mm.
FIG. 1 in Extraordinary Local Diversity of Disk-winged Bats (Thyropteridae: Thyroptera) in Northeastern Peru, with the Description of a New Species and Comments on Roosting Behavior
FIG. 1. Right oblique view of the head (A), right wrist with adhesive disk (B), and left hind limb (C) of the holotype of Thyroptera wynneae (CEBIOMAS 237). Note that due to the angle from which image (B) was taken, the adhesive disk on the thumb looks circular, but it is in fact oblong vertically. Photos: Burton Lim.
FIG. 2 in Extraordinary Local Diversity of Disk-winged Bats (Thyropteridae: Thyroptera) in Northeastern Peru, with the Description of a New Species and Comments on Roosting Behavior
FIG. 2. Dorsal (A) and ventral (B) views of the holotype of Thyroptera wynneae (CEBIOMAS 237). Photos: Burton Lim.
FIG. 6 in Extraordinary Local Diversity of Disk-winged Bats (Thyropteridae: Thyroptera) in Northeastern Peru, with the Description of a New Species and Comments on Roosting Behavior
FIG. 6. Lateral views of the skulls and lower jaw of A, Thyroptera devivoi (ROM 35588♂); B, Thyroptera discifera (AMNH 16686♀); C, Thyroptera lavali (ROM 104026♀); D, Thyroptera tricolor (AMNH 273160♀); E, Thyroptera wynneae (CEBIOMAS 237♂, holotype). Scale bar = 5 mm.
FIG. 7 in Extraordinary Local Diversity of Disk-winged Bats (Thyropteridae: Thyroptera) in Northeastern Peru, with the Description of a New Species and Comments on Roosting Behavior
FIG. 7. Results of principal components analysis, illustrating the dispersion of specimen scores for male Thyroptera devivoi (filled circles), Thyroptera discifera (open circles), Thyroptera lavali (open triangles), Thyroptera tricolor (asterisk), and Thyroptera wynneae (filled squares). See text for explanation and table 3 for factor loadings and other results.
FIG. 3 in Extraordinary Local Diversity of Disk-winged Bats (Thyropteridae: Thyroptera) in Northeastern Peru, with the Description of a New Species and Comments on Roosting Behavior
FIG. 3. The Yavarí-Ucayali interfluvial region (boundaries highlighted in grey) showing the type locality of Thyroptera wynneae (arrow) and adjacent localities where other thyropterid species have been collected. The inset shows where the paratypes were collected in southeastern Brazil. Numbers are keyed to entries in the gazetteer (appendix 2).
FIG. 10 in Extraordinary Local Diversity of Disk-winged Bats (Thyropteridae: Thyroptera) in Northeastern Peru, with the Description of a New Species and Comments on Roosting Behavior
FIG. 10. Roost of Thyroptera tricolor in the half-unrolled new leaf of a small Heliconia in primary forest at Paracou, French Guiana. The adhesive disks of the roosting bats are visible as dark spots through the translucent tissue of the leaf. The bats themselves (an adult male and three adult females) form a dark mass within their tubular shelter (arrow).
FIG. 9. Patricia J in Extraordinary Local Diversity of Disk-winged Bats (Thyropteridae: Thyroptera) in Northeastern Peru, with the Description of a New Species and Comments on Roosting Behavior
FIG. 9. Patricia J. Wynne at her microscope in the AMNH Department of Mammalogy. Patricia's first mammalogical illustration appeared almost 40 years ago (in Hooper, 1975), and she has lost track of how many she has drawn since then. In addition to her technical work for museum researchers, Patricia has illustrated museum exhibition labels, numerous educational publications, and dozens of popular science books. She is now busier than ever in semiretirement. Photo: Denis Finnin.
Data and code for: Roost selection by male northern long-eared bats (Myotis septentrionalis) in a managed fire-adapted forest
<p>Data and code for: Roost selection by male northern long-eared bats (<em>Myotis septentrionalis</em>) in a managed fire-adapted forest</p>
A population in perpetual motion: highly dynamic roosting behaviour of a tropical island endemic bat
<p>Dataset and R script for the manuscript "<strong>A population in perpetual motion: highly dynamic roosting behaviour of a tropical island endemic bat</strong>". During the embargo period, data is available upon request from the authors (muriel.dietrich@ird.fr).</p>
Figure 2. A in Roosting habits of disk-winged bats, especially Thyroptera discifera
Figure 2. A "morado" banana (red banana in English, Musa acuminata) in a patch that also includes plantains near La Paloma Lodge at Drake Bay, Puntarenas Province, Costa Rica. Portions of shredded dead leaves hanging from the trunk roll back on themselves to create dark, cone-shaped,roosting sites for bats. The top arrow points to where the colony of perhaps nine disk-winged bats, Thyroptera discifera, was observed roosting for more than a month during February−March 2021. The lower arrow shows where a single individual was found roosting for a single day. Photograph taken on 7 March 2021 by Gómez.
A novel method for estimating avian roost sizes using passive acoustic recordings
Open the record for dataset details and reuse information.
Lasiurus borealis day-roost habitat
<p>The eastern red bat (<em>Lasiurus borealis</em>) is widely considered to be in decline, inspiring interest in identifying important habitats for conservation in the eastern United States. Unfortunately, knowledge of important day-roosting habitats is lacking for much of the species' range. We examined patterns of day-roost selection by male and female eastern red bats at two study sites in southeastern Ohio, U. S. A, to help fill this information gap. We radio-tagged 28 male and 25 female bats during the summers of 2016–2019 and located 53 male and 74 female roosts. Day-roost selection differed between sexes and study areas. In a mostly even-aged forest with significant historical disturbance, we found males and females roosting in trees located at higher elevations, with no clear selection based on tree or stand characteristics. Specifically, males selected trees with larger diameters located at lower, cooler elevations than females, which selected smaller diameter trees found at higher, warmer elevations. However, in a forest with less historical disturbance and more structural diversity, we found sexes differed in how they selected from available habitats. These data show that heterogeneity in environmental conditions can lead to different patterns in selection, even between sites located within a small geographic area. They also show that eastern red bats sexually segregate on the local landscape in the presence of diverse forest conditions but may not do so in the absence of such diversity. We recommend managing forests to maintain structural diversity across an elevational gradient to provide male and female eastern red bats with suitable day-roosting habitat in southeast Ohio.</p>
Data from: External temperature and distance from nearest entrance influence microclimates of cave and culvert roosting tri-colored bats Perimyotis subflavus
<p>Many North American bat species hibernate in both natural and artificial roosts. Although hibernacula can have high internal climate stability, they still retain spatial variability in their thermal regimes, resulting in various 'microclimates' throughout the roost that differ in their characteristics (e.g., temperature, air moisture). These microclimate components can be influenced by factors such as the number of entrances, the depth of the roost, and distance to the nearest entrance of the roost. Tri-colored bats are commonly found roosting in caves in winter, but they can also be found roosting in large numbers in culverts, providing the unique opportunity to investigate factors influencing microclimates of bats in both natural and artificial roost sites. As tri-colored bats are currently under consideration for federal listing, information of this type could be useful in aiding in the conservation and management of this species through a better understanding of what factors affect the microclimate near roosting bats. We collected data on microclimate temperature and microclimate actual water vapor pressure (AWVP) from a total of 760 overwintering tri-colored bats at 18 caves and 44 culverts. Using linear mixed models analysis, we found that variation in bat microclimate temperatures was best explained by external temperature and distance from nearest entrance in both caves and culverts. External temperature had a greater influence on microclimate temperatures in culverts than caves. We found that variation in microclimate AWVP was best explained by external temperature, distance from nearest entrance and proportion from entrance (proportion of the total length of the roost from the nearest entrance) in culvert roosting bats. Variation in microclimate AWVP was best explained by external temperature and proportion from entrance in cave roosting bats. Our results suggest that bat microclimate temperature and AWVP are influenced by the similar factors in both artificial and natural roosts, although the relative contribution of these factors differ between roost types.</p>
FS0398 Palatki Grotto near Willards Roost
Palatki Grotto the crack at Willards Roost This is just past main area of the Palatki Grotto alcove. The pictographs and petroglyphs in this area are attributed to the Archaic, Sinagua, Yavapai, Western Apache, Hope and Navajo cultures. There is also abundant modern and historic graffiti in this area. The area in this model is just beyond panel 8 and just before the area known as Willards Roost. There are faint Yavapai Akaka Wasiva images in this area The Palatki Heritage site is located in the Red Rock District of the Coconino forest. Additional information about the Red Rock District of the Coconino Forest can be found at the following web sites http://www.sedonaredrocktrails.org/ http://www.fs.usda.gov/recmain/coconino/recreation Information about volunteer opportunities in the Coconino Forest including the creation of the 3D models and other projects can be found at http://www.friendsoftheforestsedona.org/ Source: Objaverse 1.0 / Sketchfab
The emergence activities of nine cave-roosting bats under different lighting conditions
<p>Artificial light at night has become an emerging environmental pollutant, posing a serious threat to biodiversity. Cave-roosting animals are vulnerable to light pollution due to long-term adaptation to nocturnal niches, and the problem is especially severe in the context of cave tourism and limestone mining. Mitigating the adverse impacts of artificial light on cave-dwelling animals presents a challenge. Here, we aimed to assess the relative contribution of spectral parameters and light intensity to emergence behavior among nine bat species inhabiting a karst cave, including <em>Rhinolophus macrotis</em>, <em>Rhinolophus pearsonii</em>,<em> Rhinolophus rex</em>, <em>Rhinolophus pusillus</em>, <em>Rhinolophus siamensis</em>, <em>Rhinolophus sinicus</em>, <em>Hipposideros armiger,</em> <em>Myotis davidii</em>, and <em>Miniopterus fuliginosus</em>. We manipulated light spectra and intensities through light-emitting diode (LED) lighting and gel filters at the entrance of bat roost. We monitored nightly passes per species to quantify bat emergence under the dark control and ten lighting conditions (blue, green, yellow, red, and white light at high and low intensities) using ultrasonic recording. Our analyses showed that the number of bat passes tended to be reduced in the presence of white, green, and yellow light, independent of light intensity. In contrast, the number of bat passes showed no pronounced differences under the dark control, blue light, and red light. The number of bat passes was primarily affected by LED light's blue component, red component, peak wavelength, and half-width instead of light intensity. These results demonstrate that spectral parameters of LED light can significantly affect emergence behavior of cave-dwelling bats. Our findings highlight the importance of manipulating light colors to reduce the negative impacts of light pollution on cave-roosting bats as a function of their spectral sensitivity. We recommend the use of gel filters to manage existing artificial lighting systems in underground habitats exploited by bats.</p>
Figure 2 in Distribution and roosting ecology of the lesser mouse-tailed bat, Rhinopoma hardwickii Gray, 1831 (Chiroptera: Rhinopomatidae)
Figure 2. The fatty abdominal tissue of Rhinopoma hardwickii.
Figure 1 in Distribution and roosting ecology of the lesser mouse-tailed bat, Rhinopoma hardwickii Gray, 1831 (Chiroptera: Rhinopomatidae)
Figure 1. The lesser mouse-tailed bat, Rhinopoma hardwickii.
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Allen Brain Atlas
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