The crow population in central Tokyo has declined to approximately 20% of its peak levels over the last 25 years [1].
This decline marks a significant shift in urban wildlife management. By limiting the primary food source for these birds, the city has effectively lowered the species' breeding rate and overall presence in the metropolitan area [1, 2].
Data indicates that the crow population reached a peak in the 2001 fiscal year [1]. While different reports vary on the exact figures, one estimate puts the peak population at approximately 36,000 birds [1]. Other records suggest a peak of about 18,000 birds around the year 2000 [2].
As of June 2026, the estimated number of crows in the city has fallen to approximately 7,500 [1]. Some surveys provide a more conservative estimate, placing the current population at around 2,000 birds [2]. This represents an overall decrease of about 80% from the 2001 peak [1].
Experts attribute the collapse in numbers to the thorough implementation of waste management strategies. By securing trash and reducing the availability of food scraps, the city has removed the artificial caloric support that previously allowed the population to thrive [1, 2].
Recent trends suggest the decline is accelerating. Tatsuki Matsuda of the pest and bird control service ROY said the population has continued to trend downward, with an image that about 60% have disappeared in the last five to six years [1].
These efforts reflect a long-term strategy to mitigate the nuisance and health risks associated with large urban bird populations, specifically those that rely on human waste for survival [1, 2].
“The crow population in central Tokyo has declined to approximately 20% of its peak levels”
The drastic reduction in Tokyo's crow population demonstrates the direct link between urban waste infrastructure and wildlife demographics. By treating waste management as a biological control mechanism, Tokyo has shifted the ecological balance of the city, proving that systemic changes in human behavior can effectively suppress an urban species without the need for direct culling.
