Winged Migration (2001, Fr.) (aka Le Peuple Migrateur)

In Jacques Perrin's incredible documentary:

• one of the most beautifully shot documentaries ever made (almost completely without the use of visual effects), that followed the migration patterns of dozens of bird species
• one flying tern that traveled thousands of miles over oceans and continents during its migration
• memorable scenes included ducks flying past the World Trade Center and the Statue of Liberty in New York City, birds fleeing an avalanche, and an old woman feeding cranes on her farm
• the disturbing imagery, such as birds abruptly being shot down by hunters in mid-flight, an injured wader bird being stalked and then fed upon by dozens of hermit crabs, and a poacher's boat holding various parrots and toucans as well as a spider monkey