Sunday, May 20, 2012

Hummingbirds: Feathered Jewels of Summer


I had one of those jewels of the bird world visit my geranium last week – yes, a hummingbird. As I do every summer, I started out early with a brightly colored feeder filled with the sweetest of sugar water. And, as they do almost every summer: they ignored it. But they do something else every summer, at least in my yard: they visit the nectar-bearing flowers. They are most noticeable when the hostas are blooming in August. But I have also seen them on my zinnias, which I knew attracted butterflies, but I had never noticed a hummingbird on them before.

One thing that struck me about the hummingbird’s attraction to the hosta flowers, is that those flowers are white, not red, like most of the hummingbird feeder and feed mixes available. It turns out that hummingbirds are more interested in the sweetness of the nectar than they are in the color of the flower.

I think everyone who attracts hummingbirds counts themselves lucky. If you want to attract them with flowers keep these guidelines in mind: the sweeter the flower the better; tubular shaped flowers are best for hummingbirds; and you should provide flowers that bloom over a long period of time. You can accomplish this by providing a succession of blooms from spring through fall. For a list of flowers that should do the trick, Birdsandblooms.com/hummingbirds has some useful information including pictures of the flowers they recommend.

Besides nectar, hummingbirds also eat insects, favoring those that are minute enough to be swallowed whole. They have been observed hovering at the bark of a tree, hunting for those tiny spiders and insects. Researchers in Michigan counted ruby-throated hummingbirds as the primary visitors to the small pits that yellow-bellied sapsuckers had drilled into trees to capture sap. The hummers ate the sap as well as the insects they found that were also attracted to the sap.

It is generally accepted that hummingbirds originated in the equatorial belt region across South America. That is where the greatest number of species has been found. Of the 320 species of hummingbirds known, more than half live in that region, with diminishing numbers of species found as you move north and south of the equator. Costa Rica supports 54 species, Mexico has 51 species, western North America has 12, and eastern North America has only one: the ruby-throated.

The ruby-throated hummingbird breeds as far north as southern Canada, and may winter as far south as Panama. When they migrate across the Gulf of Mexico, it requires them to make a continuous flight of more than 500 miles. How long would that take, you wonder? Thanks to studies conducted by Crawford Greenewalt we know that the top speed of a female ruby-throat is 27 miles per hour. So, at top speeds, this leg of the journey would take over eighteen hours!

How lovely for us to have this one unique, feathered jewel of summer, to bring their special beauty to our gardens.

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