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Garden Master
Migratory Bird Center, Smithsonian Conservation Biology Institute:
The impact of free-ranging domestic cats on wildlife of the United States
"We estimate that cats in the contiguous United States annually kill between 1.3 and 4.0 billion birds (median=2.4 billion), with ∼69% of this mortality caused by un-owned cats."
"Free-ranging cats on islands have caused or contributed to 33 (14%) of the modern bird, mammal and reptile extinctions recorded by the International Union for Conservation of Nature (IUCN) Red List."
https://www.nature.com/articles/ncomms2380
Steve
The impact of free-ranging domestic cats on wildlife of the United States
"We estimate that cats in the contiguous United States annually kill between 1.3 and 4.0 billion birds (median=2.4 billion), with ∼69% of this mortality caused by un-owned cats."
"Free-ranging cats on islands have caused or contributed to 33 (14%) of the modern bird, mammal and reptile extinctions recorded by the International Union for Conservation of Nature (IUCN) Red List."
https://www.nature.com/articles/ncomms2380
Steve