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39 results for “Nest building”
Figure 1 in First record of a four-egg clutch of Collared Forest Falcon Micrastur semitorquatus, with notes on a nest in a building in southern Brazil
Figure 1. Nest and nestlings of Collared Forest-Falcon Micrastur semitorquatus in a man-made structure in Criciúma, Santa Catarina, southern Brazil, September 2014 (Rafael Spilere Romagna)
Causes and consequences of material variation in avian nest building
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The correlates of intraspecific variation in nest height and nest building duration in the Eurasian blue tit Cyanistes caeruleus
<p>Birds build nests primarily as a receptacle to lay their eggs in, but they can also provide secondary benefits including structural support, camouflage, and adjustment of the microclimate surrounding the eggs and offspring. The factors underlying intraspecific variation in nest characteristics are poorly understood. In this study, we aim to identify the environmental factors that predict nest height variation and the duration of nest building in blue tits (<em>Cyanistes caeruleus</em>), evaluating latitude, elevation, temperature, and the timing of egg-laying as predictors of nest height, while also taking into account female and male parental identity. Using 713 nest height observations collected over a period of five years along a 220km transect in Scotland, we found that if the annual mean timing of egg-laying was earlier, nests were taller. However, there was no correlation between nest height and elevation, latitude, the minimum temperature in the 14 days pre-egg-laying or the phenology of birds within a year. Female parental identity accounted for a large amount of variation in nest height, suggesting that individual behaviour has an influence on nest structure. We also found that nest building duration was shorter in years when egg laying occurred earlier in the year, and that across all observations taller nests took longer to build. Overall, our results show that blue tits are able to alter their nest characteristics based on conditions environmental gradients like latitude (in the case of building duration) and the annual mean phenological variation timing of egg laying, and that birds build relatively taller nests faster.</p>
Data from: Phenotypic integration in an extended phenotype: among‐individual variation in nest‐building traits of the alfalfa leafcutting bee (Megachile rotundata)
Structures such as nests and burrows are an essential component of many organisms' life-cycle and requires a complex sequence of behaviors. Because behaviors can vary consistently among individuals and be correlated with one another, we hypothesized that these structures would 1) show evidence of among-individual variation, 2) be organized into distinct functional modules, and 3) show evidence of trade-offs among functional modules due to limits on energy budgets. We tested these hypotheses using the alfalfa leafcutting bee, Megachile rotundata, a solitary bee and important crop pollinator. M. rotundata constructs complex nests by gathering leaf materials to form a linear series of cells in pre-existing cavities. In this study, we examined variation in the following nest construction traits: reproduction (number of cells per nest and nest length), nest protection (cap length and number of leaves per cap), cell construction (cell size and number of leaves per cell), and cell provisioning (cell mass) from 60 nests. We found a general decline in investment in cell construction and provisioning with each new cell built. In addition, we found evidence for both repeatability and plasticity in cell provisioning with little evidence for trade-offs among traits. Instead, most traits were positively, albeit weakly, correlated (r ~ 0.15), and traits were loosely organized into covarying modules. Our results show that individual differences in nest construction are detectable at a level similar to that of other behavioral traits and that these traits are only weakly integrated. This suggests that nest components are capable of independent evolutionary trajectories.
Video S2. Nest-building.
<p><strong>Video S2. </strong>Nest-building. The male is on the nest; the female arrives with moss, searches for a place to place it, and incorporates it along the front rim of the nest by driving it into the nest with her beak and rapid back-and-forth head movements (11 June 2021, 03:02:37 hr). 43.9 MB, .mp4 file, VLC Media Player.</p>
TABLE 1 in First record of a four-egg clutch of Collared Forest Falcon Micrastur semitorquatus, with notes on a nest in a building in southern Brazil
<p>TABLE 1 Diet of Collared Forest-Falcon <i>Micrastur semitorquatus</i> nestlings in a man-made structure, Criciúma, Santa Catarina, southern Brazil. a = adult, j = juvenile.</p><table><tbody><tr><th>Taxon</th><th>No. of individuals</th></tr></tbody><tbody><tr><th>Squamata</th><td></td></tr><tr><th><i>Salvator merianae</i> (j)</th><td>1</td></tr><tr><th>Aves</th><td></td></tr><tr><th>Domestic chicken <i>Gallus gallus domesticus</i> (a)</th><td>1</td></tr><tr><th>Scaled Chachalaca <i>Ortalis squamata</i> (a, j)</th><td>3, 1</td></tr><tr><th>Roadside Hawk <i>Rupornis magnirostris</i> (j)</th><td>1</td></tr><tr><th>Squirrel Cuckoo <i>Piaya cayana</i> (a)</th><td>1</td></tr><tr><th>Guira Cuckoo <i>Guira guira</i> (j)</th><td>1</td></tr><tr><th>Blond-crested Woodpecker <i>Celeus flavescens</i> (a)</th><td>1</td></tr><tr><th>Chiroptera</th><td></td></tr><tr><th><i>Artibeus lituratus</i> (a)</th><td>1</td></tr></tbody></table>
The correlates of intraspecific variation in nest height and nest building duration in the Eurasian blue tit Cyanistes caeruleus
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Juvenile socio-ecological environment shapes material technology in nest-building birds
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Data for: Long-term environmental stability does not erode plasticity in nest building repsonses to changing ambient conditions
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Data from: Phenotypic integration in an extended phenotype: among‐individual variation in nest‐building traits of the alfalfa leafcutting bee (Megachile rotundata)
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Data from: Petals and leaves: quantifying the use of nest building materials by the world’s most valuable solitary bee
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Figure 5 in Goliath frogs build nests for spawning - the reason for their gigantism?
Figure 5. Conraua goliath at nest sites; (a) adult sitting at the edge of nest 16 (compare text and Supplementary Material); (b) eggs attached to cleaned nest ground; (c) tadpole in advanced developmental stage, the white dots above its head and at the left margin, are new eggs.
Figure 2 in Goliath frogs build nests for spawning - the reason for their gigantism?
Figure 2. Study site at Mpoula River near Penja in West Cameroon (inset figure), and Goliath Frog nest sites (red dots) along the river; the river discharges southwards.
Plumage and eggshell colouration covary with the level of sex-specific parental contributions to nest building in birds
<p>Interspecific variation in sex-specific contributions to prenatal parental care, including avian nest building, remain poorly understood. Here, we examined whether the colouration of the parents and of their eggs covary with sex-specific nest building contributions in 521 species of Western Palearctic birds. Having colourful plumages and laying colourful eggs are both costly because of the deposition of pigments (in feathers and eggs) and/or forming costly nanostructural substrates (in feathers), and so it is expected that those costs are traded-off against the costs of nest building. We therefore tested two predictions of this trade-off hypothesis, namely that species in which females alone build nests (1) exhibit sexual plumage dichromatism in that females are less colourful than males and (2) lay less colourful eggs. Using a phylogenetically-informed comparative approach, we found support for the first prediction so that species in which females build nests alone or together with males are more likely to be dichromatic in plumage. Meanwhile, regarding the second prediction, contrary to our expectation, we found that species in which females build nests alone or together with males are more likely to lay colourfully pigmented eggs relative to species in which only males build nests. This suggests that sex differences in plumage colouration and egg colouration covary in a complex manner with female pre-copulatory investment in reproduction at the interspecific level.</p>
Data from: Gone with the rain: negative effects of rainfall on male mating success in a nest-building arachnid
In nest-building species, offspring survival and reproductive success of parental individuals are strongly influenced by nest quality. Thus, quantifying the influence of abiotic conditions on nest integrity is important to predict the effects of weather variability on the fitness of parental individuals. Here we investigated how rainfall affects nest integrity and how nest integrity influences males' attractiveness and nest tenure. Our study species was the harvestman Quindina limbata, in which males build mud nests on fallen logs and protect the eggs against predators and fungi. Our dataset comprises 12 months of regular inspections of 149 nests in a Costa Rican rainforest. We found that almost 50% of the nests were destroyed by rainfall. The drag force caused by rainfall running on the fallen log surface negatively affected nest integrity. Fungi cover on nests was influenced by an interaction between rainfall and nest position on the fallen log. Irrespective of their body size, males in nests with high integrity received more eggs than males in nests with low integrity. Fungi cover did not influence the number of eggs received by the males. Finally, nest integrity and fungi cover did not affect nest tenure, but males that did not receive eggs for a long time tended to abandon their nests. Considering that intense rainfall occurs all year long in tropical forests, males should build their nests in protected sites that preserve nest structure. Protected sites may keep nest structure better preserved, improve offspring survival, attract more females, and increase males' reproductive success.
F in Carton nest building and trophobiont manipulation in the south-east Asian ant Dolichoderus sulcaticeps (Mayr 1870) (Hymenoptera: Formicidae)
F. 4. Side view of the biggest carton nest of the D. sulcaticeps colony (Genting Highlands). The dark parts of the nest wall are wet. Photo: W. Rohe
F in Carton nest building and trophobiont manipulation in the south-east Asian ant Dolichoderus sulcaticeps (Mayr 1870) (Hymenoptera: Formicidae)
F. 3. Start of nest building at the main vein (with white trophobionts) on the underside of a leaf of Uncaria spec. Photo: W. Rohe
F in Carton nest building and trophobiont manipulation in the south-east Asian ant Dolichoderus sulcaticeps (Mayr 1870) (Hymenoptera: Formicidae)
F. 2a. Pulling down a carton nest of Dolichoderus sulcaticeps, which took eight days. The colony used the nest material for other nests. Photo: W. Rohe
F in Carton nest building and trophobiont manipulation in the south-east Asian ant Dolichoderus sulcaticeps (Mayr 1870) (Hymenoptera: Formicidae)
F. 1. A part of the investigated colony of Dolichoderus sulcaticeps (Mayr 1870) on a Uncaria creeper (photo taken in the field). Photo: W. Rohe
Lateral hypothalamic neuronal ensembles regulate pre-sleep nest-building behavior
<p>Data and codes for the paper "Lateral hypothalamic neuronal ensembles regulate pre-sleep nest-building behavior".</p>
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Allen Brain Atlas
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DANDI Archive for NWB datasets
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OpenNeuro
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