These little guys must have quite the endurance.

If dogs are a man's best friend, then hummingbirds are a man's best backyard companion.

So when winter rolls along, where do the splendid creatures journey? These daintiest of birds have a long road (ahem, flight path) ahead of them as the temperatures begin to drop and winter approaches. Every winter, North American hummingbirds head South, and though they may be small, their trip is anything but.

"Hummingbirds are migratory birds that spend the winter in a different location than where they breed," writes Debbie Wolfe for Reader's Digest"The most common hummingbird in eastern North America, the ruby-throated hummingbird, claims a breeding range from the Gulf Coast north well into Canada, and then fly to the region from southern Mexico through Panama for the winter."

This explains why you often don't see hummingbirds in your neck of the woods post-fall, but it's not entirely out of the question to spot some hummingbirds in the Southern U.S. in the winter. As Wolfe notes, some birds in milder climates in the Southeast and West Coast choose to stay put and not migrate farther South.

WATCH: What You Should Know About The Fall Migration of Hummingbirds

Curiuos to learn more about these tiny birds? Here's what you should know about the fall migration of hummingbirds.

Fly on, friends. Our gardens are here for you if you need a pit stop.