Collision Mortality Has No Effect on North American Bird Populations
Author Information
Author(s): Todd W. Arnold, Robert M. Zink
Primary Institution: University of Minnesota
Hypothesis
Do collisions with manmade structures affect the population trends of North American birds?
Conclusion
Collision mortality from buildings and towers does not significantly impact the long-term population trends of North American birds.
Supporting Evidence
- Collision mortality varies significantly among species, but does not correlate with population trends.
- Migratory birds are at higher risk of collision, yet this does not translate to population declines.
- The study developed a novel method to assess the impact of collision mortality on bird populations.
Takeaway
Many birds die when they hit buildings and towers, but this doesn't seem to hurt their overall populations.
Methodology
The study analyzed collision records from 243,103 incidents involving 188 species of eastern North American landbirds and compared these to population trends.
Potential Biases
Potential biases in carcass detection and data collection methods could affect results.
Limitations
The study relies on existing data, which may not capture all collision incidents or species.
Participant Demographics
The study focused on 188 species of eastern North American landbirds.
Statistical Information
P-Value
p<0.0001
Statistical Significance
p<0.0001
Digital Object Identifier (DOI)
Want to read the original?
Access the complete publication on the publisher's website