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Hummingbird Migration

Photo by Stan Tekiela

by Stan Tekiela
© NatureSmart

November 16, 2020

            Well, it’s that time of year again. The count down is on and it is just a matter of a few precious days to a week or so before we we’ll say good-bye to one of our favorite avian backyard residents—the hummingbirds. Yes, the migration is on for these tiny jewels and it will be another 6 to 7 months before we see them again.

Unlike some of the more familiar backyard migrants such as the American Robin, which only migrates as far south as it needs to escape the cold and snow, hummingbirds are neo-topical migrants, which is to say they migrate all the way to the tropics of Central and South America. Even our ducks and geese whimp-out on migration when compared to the hummingbirds. 

            In the eastern half of the country we only have one species of hummingbird. The Ruby-throated hummingbird, named so because the male has a large ruby red throat patch called a gorget. However, in the western half of the country we have up to 18 species of hummingbird. There are over 300 species of hummers in the world. What is amazing is, all species of hummer occur only in the America’s from Alaska to the tip of South America. There are no hummers in Europe, Africa or Asia.

            Hummingbirds feed on nectar from flowers which make them important plant pollinators. They do not like flowers with nectar concentrations less than 10 percent and prefer flowers with a sugar content greater than 25 percent. Nectar is a great source of quick energy but a very poor source of nutrients, so hummers get their protein, amino acids, vitamins, and minerals from eating insects. Most of these insects are caught on the wing or gleaned from leaves and flowers. Since their bills are so small, most of the insects they catch are tiny soft bodied gnats. For example, mosquitoes are too large for a hummingbird to fit in their beak.

            During flight hummingbirds flap their wings up to 25-50 times per second. The smaller the hummingbird species the faster they flap. All this wing activity creates a humming noise which is how they got their name. Some species can flap up to 100 times per second during specialized courtship flights.

            Hummingbirds have the highest metabolism of all animals. Their heart rate can reach as high as 1,250 beats per minute. All this activity is powered by the food they eat. They consume more than their own body weight in nectar each day. To do this they are constantly searching for new flowers. They need to visit hundreds of flowers each day to meet their daily nectar requirements. They are unable to store large amounts fat for long term survival as a result all hummers are just hours away from death each day and night. Therefore, many hummers jealously guard a nectar feeder that people put out for the birds.

Finding adequate food supplies is always a challenge for hummer especially during migration. Hummingbirds migrate at night. Yep that’s right, these tiny birds migrate at night in the dark. This allows the hummers to spend the daytime hours searching for food. If the weather and winds are just right at sunset, they strike out for a full night of flying averaging only 20 to 30 mph. Using the stars and major landforms such as rivers or mountain ranges to navigate they make their way southward. After flying all night they fly down and start the laborious process of finding enough nectar and insects to get them through the day. Also, let me make one thing very clear. Hummingbirds don’t migrate on the backs of geese. This is such a common myth and is totally ludicrous.

            Another very ridiculous myth says that you need to take down your hummingbird feeders at this time of year to force them to migrate. This is actually more harmful to your hummers because you are removing a constant food source. It’s important to keep your hummingbird feeders up and full of fresh nectar at this time of year. You may just save the life of one of our most amazing birds. Until next time…

 

Stan Tekiela is an author / naturalist and wildlife photographer who travels the US to study and photograph wildlife. He can be followed at www.facebook.com and twiter.com. He can be contacted via his web page at www.naturesmart.com

           

 

             

The nationally syndicated NatureSmart Column appears in over 25 cities spanning 7 states: Minnesota, Wisconsin, Michigan, Illinois, Ohio, New York and Pennsylvania. It is a bi-weekly column circulated to over 750,000 readers.

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