Fact Check: Collisions with buildings cause up to 988 million bird deaths annually.

Fact Check: "Collisions with buildings cause up to 988 million bird deaths annually."

What We Know

The claim that collisions with buildings cause up to 988 million bird deaths annually is supported by several studies and reports. According to a study published in The Condor: Ornithological Applications, estimates suggest that between 365 million and 988 million birds are killed annually due to collisions with buildings in the United States (Audubon). This range is based on a comprehensive review of over 92,000 records across 23 studies, indicating that bird collisions are a significant source of mortality for avian populations (Birds & Buildings).

The research highlights that low-rise buildings (4-11 stories) account for approximately 56% of these collisions, while residential buildings (1-3 stories) contribute to 44% of the deaths. In contrast, high-rises (12 stories and above) are responsible for less than 1% of the total bird fatalities (Audubon, Birdwatching Daily).

Analysis

The estimates of bird deaths due to building collisions are derived from a combination of empirical data and statistical modeling, making them relatively reliable. The study referenced by Audubon and other sources is grounded in extensive field data, which adds credibility to the figures presented. However, it is important to note that the upper limit of 988 million is not a definitive number but rather an estimate that reflects the variability in bird populations and collision rates across different environments (REDUCING BIRD COLLISIONS WITH BUILDINGS AND ..., Hundreds of Millions of Birds Are Killed Annually from Building Collisions).

While the claim is supported by scientific research, there are nuances to consider. For instance, some recent studies suggest that the actual number of bird deaths could be even higher when accounting for birds that survive initial collisions but later die from their injuries (New Study Confirms Building Collisions Kill Over One Billion Birds ...). This indicates that the figures could be conservative estimates rather than absolute counts.

The sources cited are reputable, including peer-reviewed journals and established conservation organizations like Audubon, which lends credibility to the claim. However, as with any scientific estimate, there is an inherent uncertainty due to factors such as regional differences in bird populations and variations in building types.

Conclusion

The claim that collisions with buildings cause up to 988 million bird deaths annually is Partially True. While the range of 365 to 988 million is well-supported by scientific research, it is important to recognize that these figures are estimates and may not capture the full extent of the issue. The variability in bird populations and the potential for underreporting of deaths suggest that while the claim is grounded in evidence, it may not reflect the complete reality of bird mortality due to building collisions.

Fact Check: Collisions with buildings cause up to 988 million bird deaths annually.