An online resource based on the award-winning nature guide

Posts tagged “Sitta canadensis

The Nuthatch Name

12-8-16-nuthatch-507

Have you ever thought about the derivation of the Red- and White-breasted Nuthatch’s common name? It comes from their habit of wedging a nut, acorn, etc. into a tree’s bark, and by repeatedly striking the nut, “hatching” or exposing the seed within it.

Many of these seeds are then stored in bark furrows for later consumption. In one study it was found that nuthatches spend more time caching husked than unhusked seeds (71% of sunflower seeds cached were husked). This inevitably would lower the expenditure of energy and time spent when consuming the cache later in the season. Hiding time, and time and distance flying from feeders to cache sites were longer when nuthatches hoarded husked than unhusked seeds, perhaps indicating their increased value to the birds. (photo:  White-breasted Nuthatch with husked sunflower seed)

Naturally Curious is supported by donations. If you choose to contribute, you may go to http://www.naturallycuriouswithmaryholland.wordpress.com and click on the yellow “donate” button.


Bird Feeding – Does It Foster Dependency?

1-15-14 bird feeders 139Decades ago birds remaining in the Northeast in the winter almost exclusively survived on weed seeds and insects they gleaned from crevices in tree bark. Today, nearly one-third of American adults provide about a billion pounds of bird seed each year, to say nothing of suet, seed cakes, etc. Should we be worried about creating a population of food-dependent wintering birds? Studies suggest that this is not the case. Researchers (this is going to sound cruel) removed feeders from woodlands where Black-capped Chickadees had been fed for the previous 25 years, and compared survival rates with those of chickadees in a nearby woodland where there had been no feeders. They documented that the chickadees familiar with feeders were able to switch back immediately to foraging for natural foods and survived the winter as well as chickadees that lived where no feeders had been placed. Not only did the feeder-fed birds not lose their ability to find food, but research also showed that food from feeders had made up only 21 percent of the birds’ daily energy requirement in the previous two years. This is not to say that there aren’t negative aspects to feeding birds, such as window collisions, disease, house cats, etc., but one thing luring birds to our houses for a closer look doesn’t do is destroy their innate ability to find food. (Photo is of a Red-breasted Nuthatch.)

Naturally Curious is supported by donations. If you choose to contribute, you may go to http://www.naturallycuriouswithmaryholland.wordpress.com and click on the yellow “donate” button.


Arthur C. Bent & the Red-breasted Nuthatch

In 1910, at the request of the Smithsonian Institution, Arthur C. Bent, an ornithologist,  began work on a series of National Museum Bulletins which eventually were published  as 21 volumes of  “Life Histories of North American Birds.”  In these volumes Bent not only wrote his own interesting commentary, but also collected firsthand information from over 800 bird observers and included many of their observations, as well.  For decades these works were unsurpassed and remained the most comprehensive collection of field observations of North American birds available. The following is his introduction to the Red-breasted Nuthatch.  “The red-breasted nuthatch is a happy, jolly little bird, surprisingly quick and agile in his motions. He has the habit of progressing over the bark of trees like his larger relative, the whitebreast, but his tempo is much more rapid, and he extends his journeys more frequently to the smaller branches. Here he winds about the little twigs out to the end, among the pine needles, moving very fast–up, down, and around–changing his direction quickly and easily, seeming always in a hurry to scramble over the branches. He is more sociable, too, than the larger bird, and when a little company is feeding together they keep up a cheery chatter among themselves.”