Habitat geometry rather than visual acuity limits the visibility of a ground-nesting bird's clutch to terrestrial predators ...
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. Numerous ground-nesting bird populations are in decline, so understanding the effects of camouflage on their ne...
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Dryad
2023
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Online Access: | https://dx.doi.org/10.5061/dryad.wm37pvmtb https://datadryad.org/stash/dataset/doi:10.5061/dryad.wm37pvmtb |
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ftdatacite:10.5061/dryad.wm37pvmtb 2024-06-09T07:50:06+00:00 Habitat geometry rather than visual acuity limits the visibility of a ground-nesting bird's clutch to terrestrial predators ... Hancock, George Grayhson, Lizzie Burrell, Ryan Cuthill, Innes Hoodless, Andrew Troscianko, Jolyon 2023 https://dx.doi.org/10.5061/dryad.wm37pvmtb https://datadryad.org/stash/dataset/doi:10.5061/dryad.wm37pvmtb en eng Dryad https://github.com/GeorgeHancock471/3D_RNL_Tools https://dx.doi.org/10.22541/au.168978475.53445460/v1 https://github.com/GeorgeHancock471/3D_RNL_Tools Creative Commons Zero v1.0 Universal https://creativecommons.org/publicdomain/zero/1.0/legalcode cc0-1.0 FOS Biological sciences camouflage 3D scanning occlusion ground-nesting birds lapwing Dataset dataset 2023 ftdatacite https://doi.org/10.5061/dryad.wm37pvmtb10.22541/au.168978475.53445460/v1 2024-05-13T11:16:36Z 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. 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, Vanellus vanellus, on different land management regimes. Lapwings selected local backgrounds that had a higher 3D complexity at a spatial scale greater than their entire clutches compared to local ... : Data Collection Sites All images and 3D scans were collected from two separate locations monitored by the Game and Wildlife Conservation Trust (GWCT); the Avon Valley in Hampshire [50.93105,-1.78462] and Burpham in Sussex [50.87198, -0.51812]. Predation Data Nest predation status was determined using nest temperature loggers (iButtons) and weekly nest checks from the date of discovery to the point of failure or hatching following the methods of Hartman and Oring (Hartman & Oring, 2006). Predated eggshell fragments or disappearance of clutches/eggs prior to egg weight estimated hatch dates were encoded as predation events. Nest and Null Photography and Scanning From March to Mid-June of 2021 and 2022, we photographed 115 lapwing nests and 3D scanned 83. The nests were scanned with an ASUS Zenfone AR using the Matterport Scenes app from a height of 1.2m. Scans and photographs were taken from a height of 1.2 metres at a flat 90o (vertical) angle from the ground. For each nest, an additional nest-less photo ... Dataset Vanellus vanellus DataCite Metadata Store (German National Library of Science and Technology) |
institution |
Open Polar |
collection |
DataCite Metadata Store (German National Library of Science and Technology) |
op_collection_id |
ftdatacite |
language |
English |
topic |
FOS Biological sciences camouflage 3D scanning occlusion ground-nesting birds lapwing |
spellingShingle |
FOS Biological sciences camouflage 3D scanning occlusion ground-nesting birds lapwing Hancock, George Grayhson, Lizzie Burrell, Ryan Cuthill, Innes Hoodless, Andrew Troscianko, Jolyon Habitat geometry rather than visual acuity limits the visibility of a ground-nesting bird's clutch to terrestrial predators ... |
topic_facet |
FOS Biological sciences camouflage 3D scanning occlusion ground-nesting birds lapwing |
description |
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. 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, Vanellus vanellus, on different land management regimes. Lapwings selected local backgrounds that had a higher 3D complexity at a spatial scale greater than their entire clutches compared to local ... : Data Collection Sites All images and 3D scans were collected from two separate locations monitored by the Game and Wildlife Conservation Trust (GWCT); the Avon Valley in Hampshire [50.93105,-1.78462] and Burpham in Sussex [50.87198, -0.51812]. Predation Data Nest predation status was determined using nest temperature loggers (iButtons) and weekly nest checks from the date of discovery to the point of failure or hatching following the methods of Hartman and Oring (Hartman & Oring, 2006). Predated eggshell fragments or disappearance of clutches/eggs prior to egg weight estimated hatch dates were encoded as predation events. Nest and Null Photography and Scanning From March to Mid-June of 2021 and 2022, we photographed 115 lapwing nests and 3D scanned 83. The nests were scanned with an ASUS Zenfone AR using the Matterport Scenes app from a height of 1.2m. Scans and photographs were taken from a height of 1.2 metres at a flat 90o (vertical) angle from the ground. For each nest, an additional nest-less photo ... |
format |
Dataset |
author |
Hancock, George Grayhson, Lizzie Burrell, Ryan Cuthill, Innes Hoodless, Andrew Troscianko, Jolyon |
author_facet |
Hancock, George Grayhson, Lizzie Burrell, Ryan Cuthill, Innes Hoodless, Andrew Troscianko, Jolyon |
author_sort |
Hancock, George |
title |
Habitat geometry rather than visual acuity limits the visibility of a ground-nesting bird's clutch to terrestrial predators ... |
title_short |
Habitat geometry rather than visual acuity limits the visibility of a ground-nesting bird's clutch to terrestrial predators ... |
title_full |
Habitat geometry rather than visual acuity limits the visibility of a ground-nesting bird's clutch to terrestrial predators ... |
title_fullStr |
Habitat geometry rather than visual acuity limits the visibility of a ground-nesting bird's clutch to terrestrial predators ... |
title_full_unstemmed |
Habitat geometry rather than visual acuity limits the visibility of a ground-nesting bird's clutch to terrestrial predators ... |
title_sort |
habitat geometry rather than visual acuity limits the visibility of a ground-nesting bird's clutch to terrestrial predators ... |
publisher |
Dryad |
publishDate |
2023 |
url |
https://dx.doi.org/10.5061/dryad.wm37pvmtb https://datadryad.org/stash/dataset/doi:10.5061/dryad.wm37pvmtb |
genre |
Vanellus vanellus |
genre_facet |
Vanellus vanellus |
op_relation |
https://github.com/GeorgeHancock471/3D_RNL_Tools https://dx.doi.org/10.22541/au.168978475.53445460/v1 https://github.com/GeorgeHancock471/3D_RNL_Tools |
op_rights |
Creative Commons Zero v1.0 Universal https://creativecommons.org/publicdomain/zero/1.0/legalcode cc0-1.0 |
op_doi |
https://doi.org/10.5061/dryad.wm37pvmtb10.22541/au.168978475.53445460/v1 |
_version_ |
1801383247686402048 |