http://news.nationalgeographic.com/news/2007/09/070927-magnetic-birds.html
This article says that structures in bird eyes help bird navigate. You might say that birds see the magnetic field of the earth
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Experts say as many as a billion birds a year die from collisions with buildings in North America. We humans can respect the environment - make our buildings greener - by making buildings safer for birds.
Bird Sites/Glass Sites
- American Bird Conservancy
- Bird collisions article - Audubon Magazine
- Bird Conservation Alliance
- Bird Screen netting site
- Bird-Safe Building Guidelines
- Birds & Buildings - Chicago project
- Birds Page - US Fish & Wildlife Service
- Brooklyn's wild parrots
- Collisions
- Cornell Lab of Ornithology
- Fatal Light Awareness Program
- Golden Gate Audubon
- Humane Society of the US
- New York City Audubon
- Ornilux Glass
- Partners In Flight
- Phoenix Audubon
- Seattle Audubon
- Towers kill birds
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