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In the Summer they live in all the US and the Southern half of Canada. In winter the fly South to South America.
The eastern Bluebirds that live in the south just stay in the south. They don't go anywhere....
they fly
In the early or late fall, it varies with the species. the normal reason birds migrate is to avoid the winter weather, not because it is too far to walk. One is reminded of the old joke- The Penguin and the Flightless Auk, decreed: it"s much to far to walk!
Since hummingbirds don't need us humans to tell them when to migrate, you can take your feeder down whenever you want to, whether you're still seeing hummingbirds or not. Ruby-throated Hummingbirds should have left Tennessee by the first frost, so that's a good time to take your feeders in for the season.
No birds fly to the South Pole: it's at least 750 miles from open water and more than 9,300 feet above sea level. There is no food chain there for any bird, and it's too cold for animal life. In winter, there is no sun at the South Pole. However, sea birds, especially penguins, do breed on Antarctica's beaches for a few weeks or months during breeding season. These animals' home is in the sea.
Because South America is in the Southern Hemisphere and the U.S.A. is in the Northern.
The Northern Hemisphere has winter during November-January, whilst the Southern Hemisphere has winter during the Northern Hemipshere's summer. Some parts of Africa are in the Northern Hemisphere whilst other parts are South of the Equator. So some parts of Africa will have winter at the same time as the US whilst the Southern Part (Kenya, South Africa etc.) will have their summer when its the US's winter!
Too little!
* eagles * hummingbirds * blue jays
South America, Any "South" counties
My guess is that, Its winter in US when the earth is tilted south to the sun.