Vehicle Collisions
One of the leading causes of death for nēnē, with increased risk during molting and nesting seasons.
The Threat
Vehicle collisions are one of the leading causes of death for nēnē, with increased vulnerability during specific periods of their lifecycle.
Molting Period
Nēnē are flightless for 4–6 weeks and typically regain their flight feathers at the same time as their offspring
Family Impact
Accidents can be especially devastating as a nēnē may lose its mate, resulting in total failure for the nene family
During vulnerable periods, they tend to be more risk-averse, leading them to seek out new areas and, in the process, cross roads.
Current Conservation Efforts
We are in the process of aggregating all of the injury and mortality information we can find to supplement the existing body of knowledge. Despite frequent news coverage of Nēnē being struck by cars, the U.S. Fish and Wildlife Service database only lists a total of 8 instances of Nēnē injuries or mortalities. Inadequate reporting has led to a lack of understanding of the full extent of the threat to Nēnē. We continue to use all available means to access records associated with injury and mortality.
Success Story: Keaukaha Traffic Project
In 2023, we identified a road on Hawaiʻi Island where numerous nēnē were getting killed. We were able to use community sightings and collect vehicle speed data to inform policy makers to adjust the speed limit and install speed tables. Learn more about the project.
Prevention Guidelines
- Remain vigilant and slow down when driving near areas where nēnē are known to be
- Never feed nēnē as it can cause them to lose their natural fear of people
- Be especially careful during molting season when birds are flightless
- Report any injured birds immediately
Press Coverage
Keaukaha Speed Limit Change Advances
Nēnē's Death Sparks Call for Action in Keaukaha
State Urges Mindfulness as Endangered Nēnē Face Human Threats
Two Nēnē Killed Near Kahului Airport
Quick Facts
Impact Severity
Leading cause of death
Vulnerable Period
4-6 weeks during molting
High-Risk Areas
Roads near nesting sites
Report Incidents
If you witness a vehicle collision with a nēnē or find an injured bird:
Key Statistics
- • 50 nēnē killed on Kauai highways (2014-2016)
- • Only 8 incidents in USFWS database
- • Increased mortality during molting season