I wonder if it offsets the surplus birds created by bird feeding. According to USA WILD BIRD FEEDING INDUSTRY YEARLY RESEARCH 2015 [1] US consumers spend about

I wonder if it offsets the surplus birds created by bird feeding. According to USA WILD BIRD FEEDING INDUSTRY YEARLY RESEARCH 2015 [1] US consumers spend about $6B on bird seed annually. I pay about $1/lb (or a pound per kilogram ;-) for seed. A house finch weighs about 20 grams and will eat about 10 grams of seed a day. Say 100 days of winter feeding and that is 1kg of seed per bird. So something like 3 billion songbirds don’t die in the winter and nicely make up for the cat cull. ——— [1] http://www.ectownusa.net/wbfi/docs/2015_WBFI__judy_final.pdf http://www.ectownusa.net/wbfi/docs/2015_WBFI__judy_final.pdf