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Tips on attracting and feeding backyard birds.

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Birds as flying machines – Part 2

Posted by on in Attracting and feeding wild birds
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Birds can fly because they have low weight and lots of power. Their feathers, wings, hollow bones, warm bloodedness, powerful breast muscles, and a strong heart all contribute to this ability. Last week, we discussed body weight and feathers. This week we cover:
 
Strong Body Systems
The avian repertory system includes a unique system of five or more pairs of air sacs connected with the lungs. The air sacs provide a one-way traffic of air, bringing in a constant stream of unmixed fresh air. This is in contrast to mammals, where stale air is mixed more inefficiently with fresh. Birds also have a four-chambered heart, which allows double circulation. That is, the blood makes a side trip through the lungs for purification before it is circulated through the body again. Bird hearts beat rapidly, and relative to overall body size, they are large and powerful.

b2ap3_thumbnail_bird-diet.jpg
 
Fuel
Even in the foods they select to feed their “engines”, birds conserve weight. Their foods – seeds, fruit, worms, insects, frogs, rodents, fish, and so on – are rich in caloric energy. They usually do not eat foods such as leaves and grass for this reason. Furthermore, the foods most birds eat are burned quickly and efficiently. Fruit fed to a young Cedar Waxwing will pass through its digestive tract in less than 30 minutes. Birds also utilize a greater proportion of the foods they eat than do mammals.

b2ap3_thumbnail_House-Finch-cherry-blossoms-Jennifer-Rector-Winston-Salem-NC-041713.jpgHouse Finch on cherry Blossoms.  By Jennifer Rector Winston

 In all these characteristics, we see that birds are incredibly well-suited for flight and it is no wonder we admire them for this ability. Amazing!

I am delighted to join the Birdzilla team through this blog, sharing ideas and topics related to feeding and attracting wild birds in your backyard. Bird feeding is my life-long passion,  instilled by bird-feeding parents who raised me on an 80-acre farm in central Michigan.  After college, my wife and I served as U.S. Peace Corps Volunteer high-school teachers in Africa and then as staff members over an eight-year period.
 
Those wonderful times led to 30-years of bird-feeding leadership as founder of the Wild Bird Centers, franchising and supporting wild bird specialty stores across the country. I helped found the Bird Education Network and was a key financial supporter of PROJECT WILDBIRD, I currently serve as Executive Director of the National Bird-Feeding Society. Several years ago, I was asked to join “The Birder’s Team”, a working group of birding leaders selected by the National Wildlife Refuge System to recommend ways to better serve birders. millions of whom visit our extraordinary network of more than 500 Refuges. These “conservation jewels” actively protect critical habitat and conserve bird populations of all kinds. Most recently, I served as a judge to select the winning artist for the NWRS’ 2015 Duck Stamp Contest.

I now look forward to helping our readers experience the best our wonderful hobby offers. As I often say “The closer we live to each other, the closer we want to be to Nature.”

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