Brown pelicans in the Gulf of Mexico (data from Geary et al. 2018)

When using this dataset, please cite the original article.

Geary B, Walter ST, Leberg PL, Karubian J (2018) Condition-dependent foraging strategies in a coastal seabird: evidence for the rich get richer hypothesis. Behavioral Ecology. doi:10.1093/beheco/ary173

Additionally, please cite the Movebank data package:

Geary B, Walter ST, Leberg PL, Karubian J (2018) Data from: Condition-dependent foraging strategies in a coastal seabird: evidence for the rich get richer hypothesis. Movebank Data Repository. doi:10.5441/001/1.212g53s7
Cite | Share
Download the data package citation in the following formats:
   RIS (compatible with EndNote, Reference Manager, ProCite, RefWorks)
   BibTex (compatible with BibDesk, LaTeX)

File Identifier doi:10.5441/001/1.212g53s7/1  
 
Description The degree to which foraging individuals are able to appropriately modify their behaviors in response to dynamic environmental conditions and associated resource availability can have important fitness consequences. Despite an increasingly refined understanding of differences in foraging behavior between individuals, we still lack detailed characterizations of within-individual variation over space and time, and what factors may drive this variability. From 2014 to 2017, we used GPS transmitters and accelerometers to document foraging movements by breeding adult Brown Pelicans (Pelecanus occidentalis) in the northern Gulf of Mexico, where the prey landscape is patchy and dynamic at various scales. Assessments of traditional foraging metrics such as trip distance, linearity, or duration did not yield significant relationships between individuals. However, we did observe lower site fidelity and less variation in energy expenditure in birds of higher body condition, despite a population-level trend of increased fidelity as the breeding season progressed. These findings suggest that high-quality individuals are both more variable and more efficient in their foraging behaviors during a period of high energetic demand, consistent with a “rich get richer” scenario in which individuals in better condition are able to invest in more costly behaviors that provide higher returns. This work highlights the importance of considering behavioral variation at multiple scales, with particular reference to within-individual variation, to improve our understanding of foraging ecology in wild populations.
Keywords animal foraging, animal movement, animal tracking, behavioral flexibility, brown pelican, central place foraging, foraging ecology, Gulf of Mexico, individual variation, Pelecanus occidentalis, seabird,
Scientific Names Pelecanus occidentalis
Contained in Data Package Data from: Condition-dependent foraging strategies in a coastal seabird: evidence for the rich get richer hypothesis.

Files in this item

Files Size Format View Description
Brown pelicans ... rom Geary et al. 2018).csv 9.694Mb Unknown xmlui.dri2xhtml.METS-1.0.item-files-viewOpen dataset-file
README.txt 9.831Kb Text file xmlui.dri2xhtml.METS-1.0.item-files-viewOpen dc_readme
Submission