Otter Returns to Bronx River After a Century

On June 23, 2026, a motion-activated camera monitored by the Wildlife Conservation Society (WCS) captured a North American river otter foraging along the Bronx River. The image was recorded by local scientist RJ Hawkins of the WCS Bronx Zoo. Hawkins confirmed the animal is the first documented otter in the Bronx since the early 1900s, a milestone that wildlife officials say reflects the river’s improving condition.

WNYW - Fox 5 - New YorkAfter 100 years, an otter was just spotted in the Bronx River—and local scientists “could hardly believe” the footage New York PostNBCNewYork.comThe Guardian

During the 19th and early 20th centuries the Bronx River functioned as an open sewer and dumping ground for industrial waste, chemicals, oil, animal blood, and solid trash. Those pollutants, combined with unregulated fur trapping, eliminated otters and many other native species from New York’s waterways. Decades of remediation—including enforcement of the Clean Water Act and coordinated restoration projects led by public agencies, nonprofits, and community volunteers—have gradually improved water quality. In 2007, beavers reappeared in the Bronx River after more than two centuries, signaling early signs of ecological recovery.

The Guardian

• Adult river otters measure up to 5 ft (? 60 in) in length, with the tail comprising about 40 % of total body length.

The Guardian

• Males average 44 in and females 38 in; body weight ranges from 10 – 30 lb.

NBCNewYork.com

• Otters require clean water, abundant fish, and intact riparian habitat to thrive, making them reliable indicators of freshwater ecosystem health.

WNYW - Fox 5 - New York

WCS officials highlighted the sighting as evidence that long-term restoration is bearing fruit. Javier Lopez, interim executive director of the Bronx River Alliance, described the event as “a gift” to both the river and the surrounding communities that have advocated for its revival over the past five decades. The agency also noted that while the observation is encouraging, a single camera-trap image does not confirm a permanent otter population.

New York Post

River otters are top-level predators that depend on high-quality water and robust fish populations. Their return suggests that the Bronx River’s water quality and food resources have reached thresholds that can support sensitive wildlife, reinforcing the value of sustained urban environmental investment. For local residents, the sighting offers a tangible sign that the river’s long-standing reputation as a neglected urban stream is changing.

The Guardian

Researchers caution that the lone otter photograph does not prove the establishment of a resident colony. Wildlife officials stress the need for continued monitoring to determine whether the species will repopulate the river or if the animal was merely passing through. No additional sightings have been documented to date.

NBCNewYork.com

• “When I first reviewed the images, I could hardly believe what I was seeing,” — Hawkins, local scientist

The Guardian

• “There are moments in conservation that remind us why this work matters, and this is one of them,” — Bronx Zoo Director Craig

WNYW - Fox 5 - New York

• “This otter’s return is a gift, not just to the Bronx River but to the communities that have fought for 50 years to bring this river back to life,” — Javier Lopez, Interim Executive Director of the Bronx River Alliance

New York Post