The 'Great Texas Freeze' Killed Thousands of Purple Martins; Biologists Worry Recovery Could Take Decades

[OKIsItJustMe]

https://www.umass.edu/news/article/great-texas-freeze-killed-thousands-purple-martins-biologists-worry-recovery-could

Findings by UMass-Amherst led team uncovers critical effects of weather-induced mass mortality events on seemingly healthy populations

March 6, 2026

Thousands of birds, including beloved purple martins, died in “The Great Texas Freeze” of 2021. Thanks to a recent study published in Nature Ecology and Evolution led by biologists at the University of Massachusetts Amherst, we now know not only the extent of the die-off—up to 27% of the birds’ breeding population in Texas and Louisiana—but that recovery may take decades, and that we can expect weather-driven mass mortality events, increasingly common in the era of global climate change, may increasingly wreak havoc on animal populations.

For nine days in February 2021, two back-to-back deep-freezes gripped the Gulf Coast, dropping large loads of snow, sending temperatures plummeting, knocking out the Texas power grid and earning the nickname “The Great Texas Freeze.” It also resulted in the death of thousands of purple martins, a beloved migratory bird that annually arrives from its South American wintering grounds to the Gulf Coast in early February, just as the temperatures dropped.

…

Stager and her co-authors worked with the Purple Martin Conservation Association (PMCA), which was founded almost 40 years ago and has members across North America; and Louisiana State University’s Museum of Natural History, which has one of the world’s preeminent collections of birds from the southeastern U.S., to create a baseline historical scenario against which deaths associated with the Great Freeze could be compared.

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Furthermore, the effects continued to be felt long after the storm. During the 2022 migration season, martins arrived at their breeding grounds two weeks later than normal, and they differed genetically from those that had died the year before—in some ways, they were more like individuals from martin populations found further north.

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Stager, M., Benham, P.M., Senner, N.R. et al. Storm-induced mass mortality results in both immediate and long-term consequences for a migratory songbird. Nat Ecol Evol (2026). https://doi.org/10.1038/s41559-026-03005-5

[mwmisses4289]

1. Wonder how many other plants and critters were affected by that disaster?

Also, interesting that whoever wrote this is calling it the great texas freeze. First I've heard it called that, most of the folks I know call it Snowmeggedon.

[OKIsItJustMe]

2. I assume the effects on other species were similar. The purple martin data was available.

…

“The purple martin may be one of the most beloved and closely monitored backyard birds,” says Joe Siegrist, president and CEO of the PMCA and one of the paper’s co-authors. “When we recognized this unprecedented research opportunity, we were able to mobilize our army of martin lovers across Texas and Louisiana to increase monitoring of storm mortality and preserve samples for collection. Folks saddened by the loss of their birds were eager to turn this disaster into a contribution for the greater good of the species.”

…

[walkingman]

3. We've had martins for over 30 years but after the freeze we didn't have any for 2 years in a row.

Thankfully some came back last year and they are back this year. I love them.

Climate Change is having far-reaching effects and at some point the greedy will stop their denial, but it might be too late.

Man is on an unrelenting quest to destroy the natural world.

Fossil fuel are the cancer of the world. As a Texas native we no longer have any clean air or water and virtually no regulation.