Abstract

As urbanization happens, more and more buildings are built, leading to the increasing deaths of birds due to collisions with buildings, especially in the United States (US). According to a systematic estimate based on 26 datasets from North America, around 365 and 988 million birds are killed annually by crashing into buildings in the US. Collisions with low-rise buildings (4 to 11 stories tall) account for the highest proportion of mortality, with 56%.