Brian Weeks

Associate Professor; Faculty Liaison, Office of Community Impact and Engagement

Ecosystem Science and Management

Conservation + Restoration

[email protected]

Lab website

More information on Brian’s research can be found here

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About

Brian Weeks joined SEAS in 2019 and is now an associate professor. He is an evolutionary ecologist who studies how bird species and bird communities have responded to environmental change. He is a museum-, field-, and lab-based biologist with interests ranging from the influence of macroevolutionary processes on the vulnerability of communities in the Solomon Islands to morphological changes over the past 40 years in North American birds. Brian got his PhD in 2017 at Columbia University, where he was also affiliated with the Department of Ornithology at the American Museum of Natural History.

Education

PhD in Ecology, Evolution and Environmental Biology, Columbia University
MA and M.Phil, Columbia University
Affiliated PhD student, American Museum of Natural History in the Department of Ornithology
BA, Brown University

In the News

A tree swallow flies toward a wooden nesting box. The background is dark.

June 29, 2026

Crashing insect populations have resulted in smaller tree swallows that reproduce less

Contact: [email protected] Today's birds are smaller and face more breeding challenges than prior generations, because the number of insects available to feed on has...

The skull of a helmet vanga (Euryceros prevostii), a species that lives in Madagascar, shows some of the incredible variation in skeletal form found in birds. More advanced 3D representations of this variation promise to yield new insights into the origins of avian diversity around the world and how it may respond to global environmental change.

December 12, 2025

From Measuring by Hand to AI-Assisted Computer Vision

An AI system called Skelevision is transforming the once laborious process of identifying and measuring bones of bird skeletal specimens into a fully automated process performed by computers. The result is the most extensive dataset of skeletal trait measurements in birds to date.

October 27, 2025

Summer Mengarelli (MS/MSI ’24): Advancing data sharing and open research practices

Summer Mengarelli (MS/MSI ’24) started at the University of Michigan School of Information (UMSI) in 2021 to become a librarian after working as a student assistant in...

A visual representation of the sampling of avian wing-bone morphology used in the study.

May 23, 2025

AI vision system reveals bird wings evolved for heat regulation, not just flight

Using Skelevision, a new computer vision system, researchers have confirmed that not only do animals in warmer climates have longer limbs, but that the same principle...

An owl outfitted with an archival GPS unit perched on someone's hand.

November 6, 2024

How animal tracking data can help preserve biodiversity

Contact: [email protected] While ecologists have more data than ever to help monitor and understand biodiversity, researchers are still working to understand declining...

Concept illustration of a panoramic view of the mountainous wilderness, with forests, meadows, and a river in the foreground; a cityscape including skyscrapers and modern buildings in the background; various animals like deer, foxes, elk, and birds visible around the landscape; a sunny day; in the style of realistic digital art. Image credit: Nicole Smith, made with Midjourney

August 21, 2024

Human-wildlife overlap expected to increase across more than half of land on Earth by 2070

Contact: [email protected] According to a new University of Michigan School for Environment and Sustainability (SEAS) led study, as the human population grows, it's...

A robin's nest holds a baby and two eggs.

November 27, 2023

How a Warming World Could Affect Bird Development

SEAS master’s student Isaac Smith, who focuses on avian conservation, spent two months at the U-M Biological Station conducting a nest-warming experiment that he hoped would offer additional clues about how birds respond to climate change.

May 8, 2023

Smallest shifting fastest: Bird species body size predicts rate of change in a warming world

Contact: [email protected] ANN ARBOR—Birds across the Americas are getting smaller and longer-winged as the world warms, and the smallest-bodied species are changing the...

In the Media

June 26, 2026

Faculty

Brian Weeks

About

Crashing insect populations have resulted in smaller tree swallows that reproduce less

From Measuring by Hand to AI-Assisted Computer Vision

Summer Mengarelli (MS/MSI ’24): Advancing data sharing and open research practices

AI vision system reveals bird wings evolved for heat regulation, not just flight

How animal tracking data can help preserve biodiversity

Human-wildlife overlap expected to increase across more than half of land on Earth by 2070

How a Warming World Could Affect Bird Development

Smallest shifting fastest: Bird species body size predicts rate of change in a warming world

U-M study shows species of birds becoming smaller as insect populations plummet (WEMU Public Radio)

Tree swallows are shrinking as insect numbers collapse (Earth.com)

Wolverines are endangered. A University of Michigan professor explains why (MLive)

'Canary in the coal mine': Bird populations showing the impact of climate change (Boise State Public Radio)

Birds wing it in response to climate change (Cosmos)

Body sizes and shapes of birds are shrinking as the Earth warms (Earth.com)

All birds are shrinking — but small birds are shrinking fastest (The Hill)

Shrinking bodies, growing wings: Climate change having odd effect on birds, study finds (USA Today)

Bird bodies growing smaller, wingspans longer with climate change (MLive)

Many Birds Are Shrinking and Growing Longer Wings as the World Warms. Why? (Audubon)