A Pigeon-eyed View of the World

True Colors: How Birds See the World

Bird brainiacs: The genius of pigeons

You Could Take a Pigeon to the Movies

Voyeurism and Feral Pigeons - Scientific American Blog Network

How Do Birds See? Human And Bird Vision Comparison

Bird's Eye View: Pigeon Photographers at the Turn of the Century

Bare-eyed pigeon - Wikipedia

Pigeon Camera International Spy Museum

New York City's Pigeons, Like You've Never Seen Them Before