Conservation Lifts Many Rare Species From Brink
A study of 141 bird and mammal species finds targeted conservation helps most endangered animals recover from near-extinction.
Updated on Nov. 5, 2026 in Wildlife
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Researchers from Monash University and the Zoological Society of London examined 141 bird and mammal species whose wild populations fell below 50 individuals since 1950. Among species receiving direct conservation measures, 61 percent recovered to at least 100 individuals.
Why it matters
The findings show that species at the edge of extinction can be brought back when threats are reduced and populations are managed directly. Species that received no direct support fared far worse, with 37 percent going extinct.
Of 141 species whose wild populations fell below 50 individuals since 1950, 51 received direct conservation and 61 percent of those reached at least 100 individuals, compared with just 2 percent of unsupported species. The study does not report recovery timelines for individual species.
The players
Monash University
An Australian public research university whose researchers co-authored the study on species recovery.
Zoological Society of London
A British scientific and conservation charity that co-authored the study examining endangered species populations.
The details
Direct measures included invasive predator control, habitat restoration, captive breeding, and translocations, and the highest success came from pairing threat reduction with direct population management. The Lord Howe woodhen, once reduced to 23 birds in the late 1970s, now numbers more than 1,600.
Timeline
Late 1970s: Lord Howe woodhen population falls to 23 birds.
Since 1950: Populations of the 141 studied species drop below 50 individuals.
November 5, 2026: Study findings are released and published in Proceedings of the Royal Society B.
Roadmap
The Lord Howe woodhen's rebound from 23 birds to more than 1,600 is the most striking example in the study of what targeted intervention can achieve. The new findings extend that single success story into a measured pattern across 141 species.
The findings suggest that conservation funding aimed at specific threats and direct population management is more likely to succeed than leaving species unassisted. Readers interested in supporting such work can look for programs that combine habitat restoration with predator control.
The takeaway
Species facing severe decline are far more likely to recover when threats are reduced and populations are actively managed. Supporting well-designed conservation programs can make a measurable difference.
Further reading
For more on protecting animals at risk, see Wildlife.
Live Poll
Should governments spend more money to actively save endangered animal species?
