Data from: Fitness consequences of interspecific nesting associations among cavity-nesting birds
Mouton, James C.
Martin, Thomas E.
Published Apr 09, 2018 on Dryad.
Cite this dataset
Mouton, James C.; Martin, Thomas E. (2018). Data from: Fitness consequences of interspecific nesting associations among cavity-nesting birds [Dataset]. Dryad. https://doi.org/10.5061/dryad.b71g0gr
Interspecific aggregations of prey may provide benefits by mitigating predation risk, but they can also create costs if they increase competition for resources or are more easily detectable by predators. Variation in predation risk and resource availability may influence the occurrence and fitness effects of aggregating in nature. Yet, tests of such possibilities are lacking. Cavity nesting birds provide an interesting test case. They compete aggressively for resources and experience low nest predation rates, which might predict dispersion, but we found they commonly aggregate by sharing nest trees across 19 years of study. Tree sharing was more common when aspen were more abundant and somewhat more common in years with higher nest predation risk. Nest success was higher in shared trees when nest predation risk was higher than average. Ultimately, the costs and benefits of aggregating (nest tree sharing) varied across years and we outline hypotheses for future studies.
Data used to examine the frequency species share nest trees together and the vertical distance between nests. Note: Phlyogenetic distances are in a separate file.
Phylogenetic distances between species. Phylogenetic distances were obtained from a majority rules consensus tree constructed from 1000 trees using program Mesquite (Maddison and Maddison 2011). Phylogenetic trees were downloaded from www.birdtree.org (Jetz et al 2012) using the Hackett et al. (2008) backbone.
Data used to examine whether nest tree sharing is related to variation in ecological variables across years.
Data used to examine (1) habitat covariates related to shared nest trees and (2) the relationship between nest tree sharing and nest success.
National Science Foundation, Award: Graduate Research Fellowship, DEB-1701672, DEB-0841764, DEB-1241041, IOS-1349178