Editing Bird feeding (section)

== Economy ==
Large sums of money are spent by ardent bird feeders, who indulge their wild birds with a variety of [[bird food]]s and bird feeders. Over 55 million Americans over the age of 16 feed wild birds and spend more than $3 billion a year on bird food, and $800 million a year on bird feeders, [[bird bath]]s, [[bird house]]s and other bird feeding accessories.<ref name="USFWS">"Survey of Fishing, Hunting, and Wildlife Associated Recreation–National Overview 2007." ''U.S. Fish and Wildlife Service.'' 2006.</ref>  The activity has spawned an industry that sells supplies and equipment for the bird feeding hobby.

In some cities or parts of cities (e.g. [[Trafalgar Square]] in London<ref>{{cite news|url=http://news.bbc.co.uk/1/hi/england/london/6986166.stm|title=Trafalgar's pigeon ban extended|work=BBC News|date=10 September 2007|access-date=14 August 2017}}</ref>) feeding [[pigeons]] is activity discouraged by government, either because they compete with vulnerable native species, or because they abound and cause pollution and/or [[noise (environmental)|noise]].{{Citation needed|date=November 2010}}