Board Of Aldermen - Agenda - 1/23/2018 - P24

Human Causes of Bird Death in Canada and the US (per year)

Habitat Destruction
Collisions with Buildings ea — al 1,000,000,000
PowerLines [lll] 174,000,000
Hunting WwW 120,000,000
House Cats WwW 118,000,000

Collisions with Vehicles 7 80,000,000

Indirect Pesticide Poisoning 7 72,000,000

Collisions with Communication Towers ] 50,000,000

Estimated maximum values
for all causes, modified from
Nuisance Bird Control 2,000,000 The Bird Almanac: A Guide to
Poe Tate e remade eel |g ee

Wind Turbines the World’s Birds, David M.
400,000 Bird, Key Porter Books (2004)

Electrocution 100,000

Scientific Research 20.000