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Free-ranging foraging trips of Manx shearwaters-reference-data
Free-ranging foraging trips of Manx shearwaters-reference-data
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Date
2019-10-13
Citation
Padget O, Stanley G, Willis JK, Fayet AL, Bond S, Maurice L, Shoji A, Dean B, Kirk H, Juarez-Martinez I, Freeman R, Bolton M, Guilford T. 2019. Free-ranging foraging trips of Manx shearwaters-reference-data. Movebank Data Repository. https://doi.org/10.5441/001/1.k20j58qt/2Abstract
While displacement experiments have been powerful for determining the sensory basis of homing navigation in birds, they have left unresolved important cognitive aspects of navigation such as what birds know about their location relative to home and the anticipated route. Here, we analyze the free-ranging Global Positioning System (GPS) tracks of a large sample (n = 707) of Manx shearwater, Puffinus puffinus, foraging trips to investigate, from a cognitive perspective, what a wild, pelagic seabird knows as it begins to home naturally. By exploiting a kind of natural experimental contrast (journeys with or without intervening obstacles) we first show that, at the start of homing, sometimes hundreds of kilometers from the colony, shearwaters are well oriented in the homeward direction, but often fail to encode intervening barriers over which they will not fly (islands or peninsulas), constrained to flying farther as a result. Second, shearwaters time their homing journeys, leaving earlier in the day when they have farther to go, and this ability to judge distance home also apparently ignores intervening obstacles. Thus, at the start of homing, shearwaters appear to be making navigational decisions using both geographic direction and distance to the goal. Since we find no decrease in orientation accuracy with trip length, duration, or tortuosity, path integration mechanisms cannot account for these findings. Instead, our results imply that a navigational mechanism used to direct natural large-scale movements in wild pelagic seabirds has map-like properties and is probably based on large-scale gradients.
Keywords
animal foraging,animal movement,animal navigation,animal tracking,Manx shearwater,Procellariiformes,Puffinus puffinus,seabirds,spatial cognition
DOIs of related Publications
BibTex
@misc{001/1_k20j58qt/2, title = {Free-ranging foraging trips of Manx shearwaters-reference-data}, author = {Padget, O and Stanley, G and Willis, JK and Fayet, AL and Bond, S and Maurice, L and Shoji, A and Dean, B and Kirk, H and Juarez-Martinez, I and Freeman, R and Bolton, M and Guilford, T}, year = {2019}, URL = {http://dx.doi.org/10.5441/001/1.k20j58qt/2}, doi = {doi:10.5441/001/1.k20j58qt/2}, publisher = {Movebank data repository} }
RIS
TY - DATA ID - doi:10.5441/001/1.k20j58qt/2 T1 - Free-ranging foraging trips of Manx shearwaters-reference-data AU - Padget, Oliver AU - Stanley, Geoff AU - Willis, Jay K. AU - Fayet, Annette L. AU - Bond, Sara AU - Maurice, Louise AU - Shoji, Akiko AU - Dean, Ben AU - Kirk, Holly AU - Juarez-Martinez, Ignacio AU - Freeman, Robin AU - Bolton, Mark AU - Guilford, Tim Y1 - 2019/10/13 KW - animal foraging KW - animal movement KW - animal navigation KW - animal tracking KW - Manx shearwater KW - Procellariiformes KW - Puffinus puffinus KW - seabirds KW - spatial cognition KW - Puffinus puffinus PB - Movebank data repository UR - http://dx.doi.org/10.5441/001/1.k20j58qt/2 DO - doi:10.5441/001/1.k20j58qt/2 ER -