Find research datasets worth reusing
Search datasets from major research repositories and use ShareScore to quickly assess how well each record supports discovery, access, and reuse.
108
datasets available to search
ShareScore release 0.9.0
Dataset results
108 results for “bird predation”
Water depth influences survival and predator-specific patterns of nest loss in three secretive marsh bird species
<p>Wetlands have become increasingly rare in the United States, negatively influencing wetland-dependent birds, and many remaining wetlands are intensively managed through seasonal dewatering mimicking historic flood pulses during spring and summer. However, water around nests may provide protection from terrestrial predators, and lowering water levels during the breeding season of wetland birds may increase predation risk and exacerbate marsh bird population declines. Understanding interactions between water depth, nesting marsh birds, and nest predators is critical to aid managers in developing a multi-species management approach in emergent wetlands. During the 2020 and 2021 breeding seasons, we examined nest survival of 148 marsh bird nests (American Coot, <em>Fulica americana</em>, <em>n</em> = 1; Common Gallinule, <em>Gallinula galeata</em>, <em>n</em> = 64; and Least Bittern; <em>Ixobrychus exilis</em>, <em>n</em> = 83) and installed cameras at 78 nests to identify predators at a large, restored floodplain wetland in Illinois where the primary management technique is seasonal water removal to stimulate germination of moist soil plants. We found nest predation of, and abandonment by, Least Bittern and Common Gallinule were related to shallower water, and early season, high volume dewatering. Least Bitterns nested more commonly along wetland edges and nests farther from the shore were more likely to survive. Similarly, we found mammalian depredation of nests and nest abandonment decreased when deeper water was present around nests. Alternatively, snake predation was observed earlier in the year prior to water removal from inundated emergent vegetation. Our results demonstrate water depth may be an important deterrent of nest predators, especially mammals, during the breeding season. Further, we recommend managers delay dewatering until after the nesting season at sites where management for conservation-priority marsh birds is a focus.</p>
Data from: Coordination of care reduces conflict and predation risk in a cooperatively breeding bird
<p>When two or more individuals cooperate to provision a shared brood, each carer may be able to maximize their payoffs by coordinating provisioning in relation to what others are doing. This investment 'game' is not simply a matter of how much to invest, but also of the relative timing of investment. Recent studies propose that temporal coordination of care in the forms of alternation (i.e. turn-taking) and synchrony (i.e. provisioning together) function to mitigate conflict between carers and reduce brood predation risk, respectively. Such coordination is widespread in biparental and cooperatively breeding birds, yet the fitness consequences have rarely been empirically tested. Here, we use a long-term study of long-tailed tits <em>Aegithalos caudatus</em>, a facultative cooperatively breeding bird with active coordination of care, to assess the support for these hypothesized functions for coordination of provisioning visits. First, we found evidence that turn-taking mitigates conflict between carers because, in cooperative groups, provisioning rates and offspring recruitment increased with the level of active alternation exhibited by carers, and with the associated increase in provisioning rate parity between carers. In contrast, offspring recruitment did not increase with alternation in biparental nests, although it was positively correlated with parity of provisioning between carers, which is predicted to result from conflict mitigation. Secondly, synchronous nest visits were associated with a reduced probability of nest predation and thus increased brood survival, especially when provisioning rates were high. We attribute this effect to synchrony reducing carer activity near the nest. We conclude that temporal coordination of provisioning visits in the forms of alternation and synchrony both confer fitness benefits on carers, and despite being intrinsically linked, these different kinds of coordination appear to serve different functions.</p>
FIGURE 10 in Were terror birds the apex continental predators of Antarctica? New findings in the early Eocene of Seymour Island
FIGURE 10. Paleoenvironmental reconstruction of the Ypresian continental communities of Seymour Island. A large Cariamiform hunting a medium-sized ungulate and staring at Notiolofos regueroi (Mammalia: Sparnotheriodontidae), a couple of marsupials on a tree, Antarctoboenus carlinii (Aves, Falconiformes) flying on the sky, and a flightless Ratites in the back.
FIGURE 7 in Were terror birds the apex continental predators of Antarctica? New findings in the early Eocene of Seymour Island
FIGURE 7. Ungual phalanx of representatives of the most relevant groups compared with the Antarctic specimens described in this study. A, Antarctic fossil MLP-PV 13-XI-28-546; B, Chunga incerta (Cariamiformes); C, Vultur gryphus (Cathartiformes); D, Caracara plancus (Falconiformes); E, Geranoaetus melanoleucus (Accipitriformes); F, Ninox novaeseelandiae (Strigiformes); G, Casuarius casuarius (Casuariformes); H, Dromaius novaehollandiae (Struthioniformes); I, Rhea americana (Rheiformes); J, Tinamus solitarius (Tinamiformes); K, Penelope obscura and L, Crax fasciolata (Galliformes); M, Otis tarda (Otidiformes); N, Chauna torquata (Anseriformes); O, Macronectes giganteus (Procellariiformes); P, Anthropornis grandis (giant Antartic Sphenisciformes); and Q, Pygoscelis antarctica (modern Sphenisciformes). Scale bar: 10 mm.
FIGURE 4 in Were terror birds the apex continental predators of Antarctica? New findings in the early Eocene of Seymour Island
FIGURE 4. Fossil cariamiforms examined here. Ungual phalanx of the second right digit MLP-PV 13-XI-28-546 (A, C, E, G) in lateral (A), dorsal (C), medial (E), and proximal (G) views, and ungual phalanx of second digit MLP-PV 14-I- 10-199 (B, D, F) in lateral or medial (B, F) and dorsal (D) views. Scale bar: 10 mm.
FIGURE 3 in Were terror birds the apex continental predators of Antarctica? New findings in the early Eocene of Seymour Island
FIGURE 3. Linear and angular measurements taken on the schematic ungual phalanges in A-B lateral, and C, proximal views. Abbreviations: BH, basal height; HAF, maximum height of the articular facet; ICA, inner curvature angle; LFT, flexor tubercle length; OCA, outer curvature angle; TL, total length; and WAF, maximum width of articular facet.
FIGURE 6 in Were terror birds the apex continental predators of Antarctica? New findings in the early Eocene of Seymour Island
FIGURE 6. Biplot of the Principal Component Analyses (PCA). A, Analysis without normalization of data; B, Analysis with variables converted into indexes. Abbreviations: BH, basal height; HAF, maximum height of the articular facet; ICA, inner curvature angle; LFT, flexor tubercle length; OCA, outer curvature angle; TL, total length; and WAF, maximum width of articular facet.
FIGURE 2 in Were terror birds the apex continental predators of Antarctica? New findings in the early Eocene of Seymour Island
FIGURE 2. Anatomical terms used for descriptions and comparisons (after Baumel et al., 1993) in A, dorsal; B, lateral; and C, proximal views. Abbreviations: ap. phal., apex phalanx; corp. phal., corpus phalangis; cot. art., cotyla articularis (articular or proximal face); cot. art. lat., cotyla articularis lateralis; cot. art. med., cotyla articularis medialis; sulc. neur., sulcus neurovascularis (neurovascular sulcus); tuberc. ext., tuberculum extensorium (extensor tubercle); tuberc. flex., tuberculum flexorium (flexor tubercle).
FIGURE 5 in Were terror birds the apex continental predators of Antarctica? New findings in the early Eocene of Seymour Island
FIGURE 5. Morphological differences between the ungual phalanges of each digit (I, II, II, and IV) of Cariama cristata (A-D) and Psilopterus colzecus (E) in A, lateral; B, dorsal; C, plantar; D and E, proximal (articular) views (not scaled).
FIGURE 1 in Were terror birds the apex continental predators of Antarctica? New findings in the early Eocene of Seymour Island
FIGURE 1. Geological map of the Seymour Island showing the fossiliferous sites where MLP-PV 13-XI-28-546 and MLP-PV 14-I-10-199 were found (A) and the corresponding stratigraphy of the locality IAA 2/13 (B), in the James Ross Basin (C), West Antarctica (D). Modified from Montes et al. (2019).
FIGURE 9 in Were terror birds the apex continental predators of Antarctica? New findings in the early Eocene of Seymour Island
FIGURE 9. Three-dimensional reconstructions (not scaled) of different ungual phalanges. The dotted lines indicate the transversal cut areas shown below each phalanx. The arrowheads mark the path of the neurovascular sulcus and/or neurovascular canal along the phalanx. A, Patagornis marshi (MLP-PV 20-85, digit III); B, Patagornis marshi (MLP-PV 20-86, digit III); C, Psilopterus colzecus (MLP-PV 76-VI-12-2, digit II); D, Brontornis burmeisteri (MLP-PV 20-570, digit III); E, Phorusrhacos longissimus (MLP-PV 67-VIII-28-1, digit II); F, Andrewsornis abbotti MLP-PV 59-II-26-83 (digit II).
FIGURE 8 in Were terror birds the apex continental predators of Antarctica? New findings in the early Eocene of Seymour Island
FIGURE 8. Antarctic ungual phalanx compared with different Phorusrhacidae species in lateral view. A, MLP-PV 13- XI-28-546; B, Phorusrhacos longissimus (AMNH 9497 taken from Sinclair and Farr 1932 and mirrored); C, Procariama simplex MACN 8275; D, Phorusrhacus (MLP-PV 20-572); E, Paraphysornis brasiliensis; F, Patagornis marshi MLP-PV 20-184; G, Procariama simplex MACN 8225; H, Devincenzia pozzi MACN Pv 6681; I, Titanis walleri (calcotype UF 10417); J, Psilopterinae indet. MLP-PV 90-III-5-56; K, Mesembriornis milneedwardsi MACN Pv 5944; L, Patagornis marshi MLP-PV 20-164; M, Psilopterus colzecus MLP-PV 76-VI-12-2; N, Psilopterinae indet. MPEF-PV 12256; O, MMP s/n Phorusrhacidae (re-drawn from Cenizo et al., 2012). Scales bar: 10 mm (except for C, G, M, and N where the scale represents 20 mm).
Fig. 1. A in Predation behaviour of the bridle snake (Lycodon cf. davisonii) on Asian tropical evergreen forest bird nests
Fig. 1. A photograph of a bridle snake (Lycodon cf. davisonii) having just consumed a bird's egg on 27 June 2019 at 2358 at the Sakaerat Environmental Research Station, north-eastern Thailand (photo by J. Goodyear).
Fig. 2 in Predation behaviour of the bridle snake (Lycodon cf. davisonii) on Asian tropical evergreen forest bird nests
Fig. 2. Percentage of depredated nests for eight focal species caused by the top five nest predators at the Sakaerat Environmental Research Station, Thailand during the 2013–2019 breeding seasons. ABBA = Abbott's babbler, BNMO = black-naped monarch, IBFL = Indochinese blue-flycatcher, PTBA = puff-throated babbler, PTBU = puff-throated bulbul, SCBA = scaly-crowned babbler, STBU = stripe-throated bulbul, WRSH = white-rumped shama. N represents number of observed predation events for each nesting species.
Habitat geometry rather than visual acuity limits the visibility of a ground-nesting bird's clutch to terrestrial predators
<p><span>The nests of ground-nesting birds rely heavily on camouflage for their survival, and predation risk, often linked to ecological changes from human activity, is a major source of mortality. </span>Numerous ground-nesting bird populations are in decline, so understanding the effects of camouflage on their nesting behaviour is of relevance to their conservation concern. Habitat three-dimensional (3D) geometry together with predator visual abilities, viewing distance, and viewing angle determine whether a nest is either visible, occluded or too far away to detect. While this link is intuitive, few studies have investigated how fine-scale geometry is likely to help defend nests from different predator guilds. We quantified nest visibility based on 3D occlusion, camouflage, and predator visual modelling in northern lapwing, <em>Vanellus vanellus</em>, on different land management regimes. <span>Lapwings selected local backgrounds that had a higher 3D complexity at a spatial scale greater than their entire clutches compared to local control sites. Importantly, our findings show that habitat geometry – rather than predator visual acuity – restricts nest visibility to terrestrial predators, and that their field habitats perceived by humans as open are functionally closed with respect to a terrestrial predator searching for nests on the ground. </span>Taken together with lapwings' careful nest site selection, our findings highlight the importance of considering habitat geometry for understanding the evolutionary ecology and management of conservation sites for ground-nesting birds.</p>
Water depth influences survival and predator-specific patterns of nest loss in three secretive marsh bird species
Open the record for dataset details and reuse information.
Data from: Coordination of care reduces conflict and predation risk in a cooperatively breeding bird
Open the record for dataset details and reuse information.
Habitat geometry rather than visual acuity limits the visibility of a ground-nesting bird's clutch to terrestrial predators
Open the record for dataset details and reuse information.
Decomposing an elevational gradient in predation by insectivorous birds
Open the record for dataset details and reuse information.
Data from: Tree diversity enhances predation by birds but not by arthropods across climate gradients
<p>Tree diversity can promote both predator abundance and diversity. However, whether this translates into increased predation and top-down control of herbivores across predator taxonomic groups and contrasting environmental conditions remains unresolved. We used a global network of tree diversity experiments (<a href="https://www.treedivnet.ugent.be">www.treedivnet.ugent.be</a>; <em>TreeDivNet</em>) spread across three continents and three biomes to test the effects of tree species richness on predation across varying climatic conditions of temperature and precipitation. We recorded bird and arthropod predation attempts on plasticine caterpillars in monocultures and tree species mixtures. Both tree species richness and temperature increased predation by birds, but not by arthropods. Furthermore, the effects of tree species richness on predation were consistent across the studied climatic gradient. Our findings provide evidence that tree diversity strengthens top-down control of insect herbivores by birds, underscoring the need of implementing conservation strategies that safeguard tree diversity to sustain ecosystem services provided by natural enemies in forests.</p>
ScienceDex guides
Understand access before you commit
These curated guides explain access requirements, typical timelines, costs, and reuse considerations for widely used research datasets.
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
OpenNeuro is a free, open platform for sharing neuroimaging datasets, with public search, dataset pages, and download paths for web, S3, DataLad, and the OpenNeuro CLI.