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66 results for “nest survival”
Figure 3 in Variability of daily nest survival and breeding success in relation to characteristics of Eurasian magpie (Pica pica) nests
Figure 3. Relationships between nest diameter and breeding success in magpie breeding population in central Iran.
Figure 2 in Variability of daily nest survival and breeding success in relation to characteristics of Eurasian magpie (Pica pica) nests
Figure 2. Relationships between nest height and breeding success in magpie breeding population in central Iran.
Figure 1 in Variability of daily nest survival and breeding success in relation to characteristics of Eurasian magpie (Pica pica) nests
Figure 1. Relationships between nest height and fledging success in magpie breeding population in central Iran.
Data from: Incubation recess behaviors influence nest survival of Wild Turkeys
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Data from: Deceiving predators: linking distraction behavior with nest survival in a ground-nesting bird
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Data from: Vegetation phenology and nest survival: diagnosing heterogeneous effects through time
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Data from: Nest survival modeling using a multi-species approach in forests managed for timber and biofuel feedstock
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Multi-scale habitat selection and nest survival of whinchats and stonechats: Implications for grassland conservation management
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Data from: Impact of brood parasitism and predation on nest survival of the fan-tailed gerygone in New Caledonia
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Data from: Timing of vegetation sampling does not influence associations between visual obstruction and turkey nest survival in a montane forest
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Data from: Finer-scale habitat predicts nest survival in grassland birds more than management and landscape: a multi-scale perspective
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Data from: Assessing the value of novel habitats to snail kites through foraging behavior and nest survival
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Data from: Nest site selection and nest survival of Black-backed Woodpeckers after wildfire
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The abundance of small mammals is positively linked to survival from nest depredation but negatively linked to local recruitment of a ground nesting precocial bird
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Greater Sage-grouse nest bowls buffer microclimate in a post-megafire landscape although effects on nest survival are marginal
<p class="Disstext">Temperature at fine spatial scales is an important driver of nest site selection for many avian species during the breeding season and can influence nest success. Sagebrush (<i>Artemisia spp.</i>) communities have areas with high levels of vegetation heterogeneity and high thermal variation; however, fire removes vegetation that provides protection from predators and extreme environmental conditions. To examine the influence of microclimates on Greater Sage-Grouse (<i>Centrocercus urophasianus</i>) nest site selection and nest success in a fire affected landscape, we measured black bulb temperature (<i>T<sub>bb</sub></i>) and vegetation attributes (e.g. visual obstruction) at 3 spatial scales (i.e. nest bowl, microsite, and landscape) in unburned and burned areas. Nest bowls exhibited greater buffering of <i>T<sub>bb</sub></i> than both nearby microsites and the broader landscape. Notably, nest bowls were warmer in cold temperatures, and cooler in hot temperatures, than nearby microsites and the broader landscape, regardless of burn stage. Nest survival (NS) was higher for nests in unburned areas compared to nests in burned areas (unburned NS = 0.43, 95% CI: 0.33 to 0.54; burned NS = 0.24, 95% CI: 0.10 to 0.46). Amount of bare ground was negatively associated with nest survival, but effects diminished as the amount of bare ground reached very low levels. Shrub height and visual obstruction were positively associated with nest survival during the entire study period whereas, minimum <i>T<sub>bb</sub></i> had a weaker effect. Our findings demonstrate that thermoregulatory selection by Greater Sage-Grouse at nest sites had marginal effects on their nest survival. However, given that increases in vegetation structure (e.g. shrub height) provide thermal refuge and increase nest survival, vegetation remnants or regeneration in a post-fire landscape could be critical to Greater Sage-Grouse nesting ecology.</p>
Data from: Mountain Plover habitat selection and nest survival in relation to weather variability and spatial attributes of Black-tailed Prairie Dog disturbance
<p>Habitat loss and altered disturbance regimes have led to declines in many species of grassland and sagebrush birds, including the imperiled Mountain Plover (<i>Charadrius montanus</i>). In certain parts of their range Mountain Plovers rely almost exclusively on Black-Tailed Prairie Dog (<i>Cynomys ludovicianus</i>) colonies as nesting habitat. Previous studies have examined Mountain Plover nest and brood survival on prairie dog colonies, but little is known about how colony size and shape influence these vital rates or patterns of habitat selection. We examined how 1) adult habitat utilization, 2) nest-site selection, and 3) nest success responded to a suite of local- and site-level variables on large prairie dog colony complexes in northeastern Wyoming. Abundance of adult Mountain Plovers was highest on points within older, "medium"-sized (100–500 ha) colonies with high cover of annual forbs and bare ground (5.8 birds/km<sup>2</sup>), but lower on extremely large (>2000 ha) colonies (2.1 birds/km<sup>2</sup>). Nest sites were characterized by high proportions of annual forbs and bare ground and low cactus cover and vegetation height. Nest survival was higher for older nests, and nests with lower cactus cover, and decreased with increasing temperatures. Uncertainty was high for models of daily nest survival, potentially because of two competing sources of nest failure: nest depredation and nest abandonment or inviability of eggs. Drivers of these two sources of nest failure differed, with inclement weather and higher temperatures associated with nest abandonment or egg inviability. We highlight how prairie dogs alter vegetation structure and bare ground heterogeneously across the landscape, and how this in turn influences bird abundance and nest distribution at different temporal and spatial scales. Furthermore, our work reveals how partitioning the causes of nest failure during nest survival analyses enhances understanding of survival rate covariates.</p>
Data from: Nest survival in year-round breeding tropical Red-capped Larks (Calandrella cinerea) increases with higher nest abundance but decreases with higher invertebrate availability and rainfall
Nest survival is critical to breeding in birds and plays an important role in life-history evolution and population dynamics. Studies evaluating the proximate factors involved in explaining nest survival and the resulting temporal patterns are biased in favor of temperate regions. Yet, such studies are especially pertinent to the tropics, where nest predation rates are typically high and environmental conditions often allow for year-round breeding. To tease apart the effects of calendar month and year, population-level breeding activity and environmental conditions, we studied nest survival over a 64-month period in equatorial, year-round breeding red-capped larks Calandrella cinerea in Kenya. We show that daily nest survival rates varied with time, but not in a predictable seasonal fashion among months or consistently among years. We found negative influences of flying invertebrate biomass and rain on nest survival and higher survival of nests when nests were more abundant, which suggests that nest predation resulted from incidental predation. Although an increase in nest predation is often attributed to an increase in nest predators, we suggest that in our study, it may be caused by altered predator activity resulting from increased activity of the primary prey, invertebrates, rather than activity of the red-capped larks. Our results emphasize the need to conduct more studies in Afro-tropical regions because proximate mechanisms explaining nest predation can be different in the unpredictable and highly variable environments of the tropics compared with the relatively predictable seasonal changes found in temperate regions. Such studies will aid in better understanding of the environmental influences on life-history variation and population dynamics in birds.
Mismatch between strong nest site selection and low survival of nests and broods for American woodcock and its implications for conservation
<p>Code and data for the paper entitled "Mismatch between strong nest site selection and low survival of nests and broods for Scolpax minor (American woodcock) and its implications for conservation" published in Ornitholgical Applications (2025). R code for landscape nest site selection is called <a href="../api/records/10927854/draft/files/landscape_nest_selectionornapplications.R/content" target="_blank" rel="noopener">landscape_nest_selectionornapplications.R</a> and data is called usedand5000availpoints.csv. R Code for local nest site selection is called <a href="../api/records/10927854/draft/files/local_nest_selectionornapplications.R/content" target="_blank" rel="noopener">local_nest_selectionornapplications.R</a> and data is called 2021_2022_nestdataveragedwithuse.csv. R code for nest survival is called <a href="../api/records/10927854/draft/files/nestsurvivalornapplications.R/content" target="_blank" rel="noopener">nestsurvivalornapplications.R</a> and data is called nestencounterwweather.csv and nestencounterhistoryweatherhabitat.csv. R code for brood survival is called <a href="../api/records/10927854/draft/files/broodsurvivalornapplications.R/content" target="_blank" rel="noopener">broodsurvivalornapplications.R</a> and data is called broodencounterhistoryweather.csv. All datasets are within the zipped folder called Nest Site Selection and Survival Analyses.zip</p>
Data from: Temporal factors and distance to human settlement affect nest survival of the endangered Yellow-headed Parrot in Belize, Central America
<p>The endangered Yellow-headed Parrot (<em>Amazona oratrix</em>) has experienced a considerable reduction in abundance and distribution. Identifying natural and anthropogenic causes of nest failure is a critical step towards developing conservation actions that increase nest survival. In this study, we examined daily nest survival in relation to temporal, habitat and anthropogenic factors, as well as nest site properties. We monitored nests (<em>n </em>= 124) across six study sites in Belize during 2017 and 2018 and independently modeled the effects of predation, abandonment and poaching on daily nest survival rates. Overall, the estimated cumulative nest survival probability was 0.18 (95% CI = 0.12 – 0.25). Predation was the main cause of nest failure, followed by abandonment and poaching. Our results showed that nest predation and abandonment usually occurred early in the nesting cycle. Day within the nesting season negatively influenced daily survival for abandoned nests and had a quadratic effect on survival for poached nests.<strong> </strong>Poaching events occurred at a specific date range later in the season, with nests farther from the nearest human settlement having higher daily survival. Findings from this study highlight the additive mortality effect that nest poaching is having on Yellow-headed Parrot populations in Belize and show that managers can anticipate the timing and location of nests most vulnerable to poaching.<span> </span></p>
Nest survival, female survival, and average covariates used in modeling, along with metadata
<p class="CxSpFirst">Females must balance physiological and behavioral demands of producing offspring with associated expenditures, such as resource acquisition and predator avoidance. Nest success is an important parameter underlying avian population dynamics. Galliforms are particularly susceptible to low nest success due to exposure of ground nests to multiple predator guilds, lengthy incubation periods, and substantive reliance on crypsis for survival. Hence, it is plausible that nesting individuals prioritize productivity and survival differently, resulting in a gradient of reproductive strategies. Fine-scale movement patterns during incubation are not well documented in ground-nesting birds, and the influence of reproductive movements on survival is largely unknown. Using GPS data collected from female wild turkeys (<i>n</i> = 278) across the southeastern United States, we evaluated the influence of incubation recess behaviors on tradeoffs between nest and female survival. We quantified daily recess behaviors including recess duration, recess frequency, total distance traveled, and incubation range size for each nest attempt as well as covariates for nest concealment, nest attempt, and nest age. Of 374 nests, 91 (24%) hatched and 39 (14%) females were depredated during incubation. Average nest survival during the incubation period was 0.19, whereas average female survival was 0.78. On average, females took 1.6 daily unique recesses (SD = 1.2), spent 2.1 hrs off the nest each day (SD = 1.8), and traveled 357.6 m during recesses (SD = 396.6). Average nest concealment was 92.5 cm (SD = 47). We found that females who took longer recess bouts had higher individual survival, but had increased nest loss. Females who recessed more frequently had lower individual survival. Our findings suggest behavioral decisions made during incubation represent life-history tradeoffs between predation risk and reproductive success on an unpredictable landscape.</p>
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Allen Brain Atlas
Allen Brain Atlas is an Allen Institute collection of brain map atlases, datasets, APIs, and analysis tools covering mouse, human, and non-human primate brain resources.
Annotated Behaviour and Observability Dataset (ABODe)
ABODe is a University of Edinburgh DataShare dataset for behavior classification in group-housed mice using home-cage video, identities, bounding boxes, ground-plate positions, and annotator labels.
DANDI Archive for NWB datasets
DANDI is a BRAIN Initiative archive for publishing and sharing neurophysiology data, including electrophysiology, optophysiology, and behavioral data packaged as NWB and related standards.
International Brain Laboratory public data
The International Brain Laboratory public data releases expose standardized mouse decision-making experiments, including Neuropixels recordings, widefield calcium imaging, behavior, and session metadata accessed through the ONE API.
OpenNeuro
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