Urban peregrines have colonized cities across Europe and North America, but face welfare challenges from disturbance, window strikes, and exposure to urban contaminants.
Rodenticide exposure through urban pigeon prey causes sub-lethal health effects including immune suppression. Fledgling birds that land on streets are vulnerable to traffic and cat attacks. Disturbance at popular urban nest sites by photographers can cause temporary nest abandonment. Glass strikes are more common in urban environments killing juvenile birds. Urban noise may mask communication between adults and chicks.