THE KAISER LAB @ CORNELL LAB OF ORNITHOLOGY
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Principal Investigator
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Dr. Sara Kaiser
I am a Research Ecologist and the Director of the Hubbard Brook Field Ornithology Program at the Cornell Lab of Ornithology and Research Associate at the Smithsonian Conservation Biology Institute. 

My research program provides training and research opportunities for undergraduates and postdoctoral researchers as part of my ongoing research on the effects of changing seasonality on migratory black-throated blue warblers, based during the summer months at the Hubbard Brook Experimental Forest in the White Mountains of New Hampshire.
Ph.D. Cornell University, behavioral ecology
M.S. Michigan State University, ecology, evolutionary biology and behavior
B.S. Iowa State University, zoology
Postdoctoral research at the Cornell Lab of Ornithology, Smithsonian Migratory Bird Center, and Smithsonian Center for Conservation Genomics


​​Prior to my doctoral training, I taught field courses as a Faculty Instructor of Conservation Biology in New Zealand and worked as an Avian Ecologist managing threatened and endangered species projects on the California Channel Islands in island bird conservation. ​

Postdoc
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Dr. Todd Jones
Postdoctoral Fellow, Smithsonian Migratory Bird Center & Cornell Lab of Ornithology
Research Affiliate, Illinois Natural History Survey

Hubbard Brook Research:
Within-season costs of reproduction in the black-throated blue warbler

Follow Todd's work: https://toddmj6.wixsite.com/todd-jones/home​

Current Students
My highly motivated students have conducted independent research on a variety of topics.
Student field projects have included lab components during the academic year and leveraged long-term data (behavioral, genetic, environmental) collected as part of long-term population studies. ​I encourage my students to develop original research, to write grant proposals to support their research, and to submit senior theses and scientific publications to further their development as scholars. 

cornell university

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Amaya Bechler
Cornell University Class of 2025, Environment & Sustainability - Environmental Biology, Applied Ecology

Hubbard Brook Field Ornithology Program:
Characterizing variation in gut microbiome composition and diet from breeding through molt in the migratory black-throated blue warbler
  • Student Science Research Grant from the Rochester Academy of Sciences (RAS)
  • Featured 2022-2023 Undergraduate Student Research Grant Award Winner (RAS eBulletin)
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​Collaborator: 

​Dr. Brian Trevelline, Cornell Lab of Ornithology
Dr. Gemma Clucas, Cornell Lab of Ornithology

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Andre Golumbeski
Cornell University Class of 2024, Biological Sciences - Ecology and Evolutionary Biology

Hubbard Brook Field Ornithology Program

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Grace Guo
Cornell University Class of 2025, Biological Sciences - Ecology and Evolutionary Biology
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Hubbard Brook Field Ornithology Program:
Spatial patterns in perceived predator hotspots, nest site selection, and nest survival in the black-throated blue warbler

​Collaborator: 

​Dr. Michael T. Hallworth, Vermont Center for Ecostudies

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Brian Hofstetter
Cornell University Class of 2026, Biological Sciences - Ecology and Evolutionary Biology

Hubbard Brook Field Ornithology Program:
Male post-fledging parental care and paternity in the black-throated blue warbler

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August Davidson-Onsgard
Cornell University Class of 2024, ​Biological Sciences - Ecology and Evolutionary Biology

Hubbard Brook Field Ornithology Program:
Signaling function of the supercilium in female black-throated blue warblers

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Hannah Pryor
Cornell University Class of 2026, Environment and Sustainability with a student-designed Ornithology concentration
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Hubbard Brook Field Ornithology Program:
Geographic song variation and subspecies recognition in the yellow-rumped warbler complex​

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Braeden Thomson
Cornell University Class of 2024, Earth and Atmospheric Sciences, Environment & Sustainability

​Hubbard Brook Field Ornithology Program:
Oxidative costs and constraints of territory quality on reproductive effort in male black-throated blue warblers
  • Student Science Research Grant from the Rochester Academy of Sciences (RAS)
  • Featured 2022-2023 Undergraduate Student Research Grant Award Winner (RAS eBulletin)

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Eryn Woernley
Cornell University Class of 2024, Environment & Sustainability

Hubbard Brook Field Ornithology Program:
Effects of timing of breeding on post-fledging parental care and survival in the black-throated blue warbler
  • Student Research Grant from the Cornell Lab of Ornithology

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Jasmine (JazzyJ), Lab Pooch
I am an avid birder and runner. I get along with every dog, cat, and person (big or small) that I meet. I enjoy exploring the White Mountain National Forest and entertaining the Hubbard Brook research community with my goofy smile and howl.

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Support Team
Brett & Jack - always up for joining me in the field and chasing birds.

41st Black-throated Blue Warbler Field Crew 2023
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Front row (L to R): Sara Kaiser (Director), Amaya Bechler '25, August Davidson-Onsgard '24, Grace Guo '25, Brian Hofstetter '26, Hannah Pryor '26, Jackson Hutchison '23, Megan Miller (Field technician), Braeden Thomson '24, Kim Savides (Crew leader), Alicia Brunner (PhD student), Bridget Tweedie (PhD student), Todd Jones (Postdoc), Gilberto Pasinelli (Swiss Ornithological Institute)

Lab Alumni

cornell university

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Lezhi (Stella) Hao
Cornell University Class of 2023, Biological Sciences - Genetics, Genomics and Development 
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Hubbard Brook Field Ornithology Program:
Female plumage traits as signals of mate quality, competitive ability, and stress resilience in the black-throated blue warbler
  • Student Science Research Grant from the Rochester Academy of Sciences (RAS)
  • Wilson Ornithological Society Research Grant (https://wilsonsociety.org/2021/08/16/2021-research-grants/
  • Featured 2020-2021 Undergraduate Student Research Grant Award Winner (RAS eBulletin)
  • Nancy Klamm Oral Presentation Award (best undergraduate oral presentation) from Wilson Ornithological Society Meeting

Follow on Twitter: @HaoStella10

Graduate School: Ph.D. Student, Arizona State University (Dr. Kevin McGraw's lab)

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Jackson Hutchison
Cornell University Class of 2023, Biological Sciences - Ecology and Evolutionary Biology

Hubbard Brook Field Ornithology Program:
Post-fledging survival, movement, and habitat use of migratory black-throated blue warblers in high- and low-risk habitat
  • Eastern Bird Banding Association Memorial Fund Research Grant
  • Undergraduate Research Grant from the Cornell University College of Agriculture and Life Sciences 
  • ​Student Research Grant from the Cornell Lab of Ornithology

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​​John Deitsch
Cornell University Class of 2022, Entomology, Biological Sciences - Ecology and Evolutionary Biology

​Hubbard Brook Field Ornithology Program:
Artificial light at night increases top-down pressure on caterpillars: experimental evidence from a light-naïve forest 
  • Student Science Research Grant from the Rochester Academy of Sciences (RAS)
  • Libbie H. Hyman Memorial Scholarship from the Society for Integrative and Comparative Biologists (SICB) to support his first field station experience at the Hubbard Brook Experimental Forest to conduct research on invertebrates
  • Undergraduate Research Grant from the Cornell University College of Agriculture and Life Sciences ​
  • Featured 2020-2021 Undergraduate Student Research Grant Award Winner (RAS eBulletin)
  • Featured 2020-2021 Undergraduate Researcher (SICB newsletter)
  • John's first-authored paper was published in Proceedings of the Royal Society B: Biological Sciences
  • Awarded an NSF Graduate Research Fellowship for Fall 2023

Follow John's work: https://jfdeitsch.wixsite.com/entomornithologist ​
Follow on Twitter: @DeitschJohn

Graduate School: Ph.D. Student, University of Texas, El Paso

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Lindsey Forg
Cornell University Class of 2022, Environment & Sustainability

​Hubbard Brook Field Ornithology Program:
DNA metabarcoding reveals within-season variation in the diet of the insectivorous black-throated blue warbler
  • American Ornithological Society Research Award
  • Undergraduate Research Grant from the Cornell University College of Agriculture and Life Sciences ​

Collaborators: 
​Dr. Gemma Clucas, Cornell Lab of Ornithology
​Dr. Andrew Stillman, Cornell Lab of Ornithology

Follow Lindsey's work: http://www.lindseyforgphotography.com/
Follow on Twitter: @ForgLindsey
​Follow on Instagram: @lindsey.forg

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Raisa Kochmaruk
Cornell University Class of 2021, Environment & Sustainability - Science Communication

​Hubbard Brook Artist in Residence Program:
Scientific illustration series of female plumage variation and nestling development in the black-throated blue warbler

Hubbard Brook Mural

Collaborator:
​Jillian Ditner, Cornell Lab of Ornithology


Professional position: Communications Specialist, Hubbard Brook Research Foundation

Follow Raisa's work: https://mondielle.com/
Follow on Twitter: @RKochmaruk
Follow on Instagram: @raisa_kochmaruk

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Sophie Rabinowicz
Cornell University Class of 2021, Animal Science, Environment & Sustainability

​Hubbard Brook Field Ornithology Program: 

Impacts of research disturbance on avian nest defense behaviors and nest survival across a landscape of risk
  • Undergraduate Research Grant from the Cornell University College of Agriculture and Life Sciences ​

Maria Smith
Cornell University Class of 2016, Biological Sciences - Neurobiology and Behavior

REU topic: Functional variation in nest morphology and brooding behavior along a climate gradient
  • Received the prestigious Merrill Presidential Scholar Award from Cornell
  • Awarded an NSF Graduate Research Fellowship for Fall 2017
  • Maria's first-authored paper "Variation in nest characteristics and brooding patterns by female Black-throated Blue Warblers is associated with thermal cues" was published in The Auk: Ornithological Advances!
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​Graduate school: Ph.D. Candidate, Princeton University (Dr. Christina Riehl's lab)

Dominique Hellmich
Cornell University Class of 2015, Biological Sciences - Ecology and Evolutionary Biology

Honors Thesis and REU topic: Role of top-down selection pressure by predators on lay-date adjustment in response to spring temperature
  • Tanner Dean Scholars Research Grant 
  • Charles Tracy Fund for student research from the Cornell Lab of Ornithology​

Sarah Rubenstein, M.S.
Cornell University Class of 2015, Science of Natural Environmental Systems

Honors Thesis and REU topic: Linking personality traits to parental behaviors and reproductive success

Graduate school: M.S., Wildlife Ecology, University of Maine (Dr. Joseph Zydlewski's lab)
Professional position: Biological Science Technician, U.S. Geological Survey (USGS)
Follow on Twitter: @srubenstein

Dr. Juliet Jacobson
Cornell University Class of 2016, Biological Sciences - General Biology

Lab-based training: Genotyping and paternity analyses


Professional School: New York Medical College
Follow on Twitter: @jacojuls

Dr. Kathryn Grabenstein
Cornell University Class of 2014, Biological Sciences - Neurobiology and Behavior

Honors Thesis and REU topic: Resource-dependent offspring sex allocation
  • Cynthia Kagarise Sherman Undergraduate Research Award for an Outstanding Honors Thesis in Behavior
  • Honorable mention in the Undergraduate Poster Competition at the 51st Annual Conference of the Animal Behavior Society, Princeton, NJ August 2014, "No experimental support for resource-dependent sex allocation in a migratory songbird".
  • Click here to learn more about her research in another system, the red-backed fairy wren
  • Awarded an NSF Graduate Research Fellowship for Fall 2017

​Graduate school: Ph.D., University of Colorado Boulder (Dr. Scott Taylor's lab)
Professional position: Rose Postdoctoral Fellow at Cornell Lab of Ornithology
​Follow Kathryn's work: 
https://www.kathryngrabenstein.com/

​Laura Stirling
Cornell University Class of 2011, Biological Sciences - Ecology and Evolutionary Biology

REU topic: Implications of trill rate and bandwidth trade-offs in mate choice and male reproductive success

smithsonian conservation biology institute

​Ellie Ezekiel​
Franklin & Marshall College Class of 2017, Biology

REU topic: Prevalence of avian malaria in Old World tropical songbirds

​Conor Harbeck
Franklin & Marshall College Class of 2017, Biology

REU topic: Offspring sex ratio bias in Old World tropical songbirds

hubbard brook research experience

Alisa Muniz
Humboldt State University Class of 2015, Wildlife Biology

REU project: Spatial and temporal variation in songbird nest predation
  • Ranked top 20 in the undergraduate poster competition at the 20th Annual Conference of The Wildlife Society in Milwaukee, WI

Dr. Andre Moncrieff
Andrews University Class of 2014, Music, Biology

Independent project: Song characteristics that predict extra-mating success
  • Awarded an NSF Graduate Research Fellowship for Fall 2015

Follow on Twitter: @Andre_Moncrieff

Graduate school: Ph.D. Candidate, Louisiana State University (Dr. Robb Brumfield's lab)
Professional position: Postdoc at LSU Museum of Natural Science

​Ryan Steiner
Frostburg State College Class of 2012

REU topic: Effect of food supplementation on avian incubation behavior and hatchling mass

Graduate school: M.S., University of Minnesota Duluth (Dr. Gerald Niemi's lab)

Professional position: ‎Researcher, Natural Resources Research Institute, Avian Ecology Lab

Jessica Sutt, M.S.
Warren Wilson College Class of 2011, Conservation Biology, Environmental Education

Honors Thesis and REU topic: Influence of food availability and female constraints on sex differences in parental care
  • Undergraduate thesis awarded 1st place at the North Carolina Academy of Science
  • Bonner Scholarship for summer fieldwork

Graduate school: M.S., Fisheries and Aquatic Sciences, University of Florida '14
Professional position: ‎Digital Strategist at Office of Surface Mining Reclamation and Enforcement

Dr. Lindsey Nietmann
Carlton College Class of 2009, Biology - Environmental Studies

Independent project: Vocal consistency and extra-pair mating success
  • Awarded an NSF Graduate Research Fellowship

Graduate school: Ph.D., University of Washington (Dr. Renee Ha's lab)
Professional position: Wildlife Biologist, Division of Forestry and Wildlife, Hawaii Department of Lands and Natural Resources

Alexa Trimble (Branesky)
Washington State University Class of 2009, Biological Sciences

Senior project: Effects of weather and climate on mating patterns in a migratory bird
  • Washington State University's Center for Environmental Research, Education, and Outreach Award (poster competition)​
©S.A. Kaiser 2012
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