This video from the USA says about itself:
5 December 2016
Habitat loss throughout the Americas is threatening entire suites of migratory birds. Flyways are fraught with growing, man-made threats: wind energy projects sited in migratory pathways, toxic pesticides, reflective windows, free-roaming cats.
Falling bird numbers tell the story. If you have been a bird lover for a while, you have noticed. Migratory birds are in trouble, and we must act. Will you donate today to help us lift up migratory birds? Your gift between now and December 31 will be matched dollar-for-dollar up to $500,000.