We learn about Toronto activists who've drastically cut collision deaths by placing small
markers on mirrored or
clear - glass building surfaces that birds otherwise can't perceive; a fight between hunters and preservationists over the ortolan bunting,
still a culinary delicacy despite its trapping being declared illegal in 1999; and monitors at a 9/11 memorial in New York, making sure that a temporary light sculpture doesn't confuse birds at the height of migration season.