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New Defenders Report Analyzes Strengths and Gaps in Section 4(d) Protections for Threatened Species
Defenders of Wildlife today released a report assessing how federal wildlife agencies have applied section 4(d) of the Endangered Species Act over the past decade.
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Defenders Presses Forward in Lawsuit Against ESA 4(d) Rescission
Defenders of Wildlife today filed an amended complaint challenging the Trump administration’s rescission of the Endangered Species Act’s blanket 4(d) rule with co-plaintiffs, the Center for Biological Diversity.
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Black-Footed Ferrets Secure Critical Win, Following Public Outcry
A transmission line in Kansas will be modified to avoid impact on the endangered black-footed ferret, a significant win driven by individuals across the Plains.
Press Releases
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Ocelot Conservation Day Returns to the RGV
On March 7, the annual celebration of Texas’ beloved native cat, Ocelot Conservation Day, returns to the Rio Grande Valley. Now in its 29th year
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Mexican Gray Wolf Numbers Reach 317 in Southwest
The Arizona and New Mexico wildlife agencies today jointly announced that the number of endangered Mexican gray wolves in the Southwest grew by 31 last year — to 319 in 2025 from 286 in 2024.
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Study Led by Defenders of Wildlife Scientist Shows Noise Pollution Impacts on Migratory Birds
“The major takeaway from this study is that anthropogenic noise affects many aspects of bird behavior, with some responses more directly tied to fitness,” said Natalie Madden, lead author of the new study.
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Defenders Receives Advocacy Organization of the Year Award
Defenders of Wildlife joined its partners in the Safe Passage coalition today to accept the Advocacy Organization of the Year Award at the 2026 Sweethearts
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Defenders Raises Alarm Over Administration’s Proposal to Amend Rule Protecting North Atlantic Right Whales From Deadly Vessel Strikes
Defenders of Wildlife is devastated to learn that a three-year-old female North Atlantic right whale was found dead off Virginia on February 10, 2026. This
jcovey@defenders.org
