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A common pattern in North America is clockwise migration, where birds flying North tend to be further West, and flying South tend to shift Eastwards. Many, if not most, birds migrate in flocks. For larger birds, flying in flocks reduces the energy cost. Geese in a V formation may conserve 12–20% of the energy they would need to fly alone.
The seasonal migration of birds across the globe is a remarkable wonder of our natural world. ... “We've lost 3 billion birds from North America in the last 50 years, of which 2.5 billion are ...
When migration season begins, Ruby-throated hummingbirds are still abundant throughout the eastern half of the U.S., according to the Audubon Society's online bird migration explorer tool. "By ...
Waterfowl flyways in the United States. The Atlantic Flyway is in violet. The Atlantic Flyway is a major north-south flyway for migratory birds in North America. The route generally starts in Greenland, then follows the Atlantic coast of Canada, then south down the Atlantic Coast of the United States to the tropical areas of South America and the Caribbean. [1]
Some birds arrive here after only a short jaunt north, having spent the winter maybe no farther south than coastal states. Think house wren, catbird, phoebe, or blue-gray gnatcatcher.
Monarch butterfly migration is the phenomenon, mainly across North America, where the subspecies Danaus plexippus plexippus migrates each autumn to overwintering sites on the West Coast of California or mountainous sites in Central Mexico. Other populations from around the world perform minor migrations or none at all.
A few days before Halloween, data collectors at the Jekyll Island Banding Station (JIBS) observe a steady, yet predictable, decline of birds in nets, signaling the end of migration.
The Central Flyway Council is composed of representatives from agencies responsible for migratory bird management in 10 states, two Canadian provinces and the Northwest Territories. Member states and provinces in the council are: Montana , Wyoming , Colorado , New Mexico , Texas , Oklahoma , Kansas , Nebraska , South Dakota , North Dakota ...