Institution: Cornell University
Department: Lab of Ornithology
Ithaca, NY 14850
Hubbard Brook Role: Investigator
SaraKaiser

Research Interests

My research program focuses on an integrative understanding of how the environment shapes the evolution of complex social behavior, especially reproductive strategies. I am particularly interested in the role of social behavior in population and evolutionary dynamics involving sexual selection, population differentiation, and adaptation to environmental change. Current collaborative projects at Hubbard Brook focus on behavioral and demographic responses of migratory birds to environmental change (warming springs, extended greening period) and the effects of changing food supplies on avian mating systems.

Hubbard Brook Publications by this Author

Kaiser, S. A., Grabenstein, K. C., Sillett, T. S., & Webster, M. S. (2023). No evidence of sex ratio manipulation by black-throated blue warblers in response to food availability. Behavioral Ecology and Sociobiology, 77(11), 124. https://doi.org/10.1007/s00265-023-03401-y
Deitsch, J. F., & Kaiser, S. A. (2023). Artificial light at night increases top-down pressure on caterpillars: experimental evidence from a light-naive forest. Proceedings of the Royal Society B: Biological Sciences, 290(1994), 20230153. https://doi.org/10.1098/rspb.2023.0153
Germain, R. R., Hallworth, M. T., Kaiser, S. A., Sillett, T. S., & Webster, M. S. (2020). Variance in within-pair reproductive success drives the opportunity for sexual selection annually and over the lifetimes of males in a multi-brooded songbird. BioRxiv, 2020.03.03.974790. https://doi.org/10.1101/2020.03.03.974790
Smith, M. G., Kaiser, S. A., Sillett, T. S., & Webster, M. S. (2018). Variation in nest characteristics and brooding patterns of female Black-throated Blue Warblers is associated with thermal cues. The Auk, 135(3), 733–747. https://doi.org/10.1642/AUK-17-195.1
Cramer, E. R. A., Kaiser, S. A., Webster, M. S., Sillett, T. s., & Ryder, T. b. (2017). Characterizing selection in black-throated blue warblers using a sexual network approach. Journal of Evolutionary Biology, 30(12), 2177–2188. https://doi.org/10.1111/jeb.13183
Kaiser, S. A., Taylor, S. A., Chen, N., Sillett, T. S., Bondra, E. R., & Webster, M. S. (2017). A comparative assessment of SNP and microsatellite markers for assigning parentage in a socially monogamous bird. Molecular Ecology Resources, 17(2), 183–193. https://doi.org/10.1111/1755-0998.12589
Kaiser, S. A., Risk, B. B., Sillett, T. S., & Webster, M. S. (2017). Ecological and Social Factors Constrain Spatial and Temporal Opportunities for Mating in a Migratory Songbird. The American Naturalist, 189(3), 283–296. https://doi.org/10.1086/690203
Kaiser, S. A., Sillett, T. S., Risk, B. B., & Webster, M. S. (2015). Experimental food supplementation reveals habitat-dependent male reproductive investment in a migratory bird. Proceedings of the Royal Society of London B: Biological Sciences, 282(1803), 20142523. https://doi.org/10.1098/rspb.2014.2523
Kaiser, S. A., Sillett, T. S., & Webster, M. S. (2014). Phenotypic plasticity in hormonal and behavioural responses to changes in resource conditions in a migratory songbird. Animal Behaviour, 96, 19–29. https://doi.org/10.1016/j.anbehav.2014.07.004
Townsend, A. K., Sillett, T. S., Lany, N. K., Kaiser, S. A., Rodenhouse, N. L., Webster, M. S., & Holmes, R. T. (2013). Warm Springs, Early Lay Dates, and Double Brooding in a North American Migratory Songbird, the Black-Throated Blue Warbler. PLoS ONE, 8(4), e59467. https://doi.org/10.1371/journal.pone.0059467
Kaiser, S. (2013). Reproductive trade-offs and environmental constraints in a migratory songbird (HBR.2013-46) [PhD Thesis]. Cornell University.