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What’s The Difference Between The White And Dark Meat Of Your Thanksgiving Turkey?
Posted on Wednesday, November 18, 2015 by eNature

While we come together as friends and families at Thanksgiving gatherings, once at the table, many of us divide into two separate and oppositional camps: those who prefer the legs and thighs of our traditional bird for their dark meat, versus those who opt for the whiter breast meat.

We may know which kind of meat we like best, but few of us know the reason for the difference.

It’s A Question Of Fibers
The muscles of all birds possess several types of fibers. In fact, each muscle usually has a mixture of these fibers. Because red ones predominate in the leg and thigh muscles of birds like turkeys and chickens, the tissue there appears dark. The breast tissue, meanwhile, is composed mostly of white muscle fibers. Why? Because the breast muscles of these birds serve a different purpose than their leg and thigh muscles.

Turkeys and chickens, remember, are ground-dwelling birds that spend all of their waking hours walking, running, and scratching for food. The muscles in their legs are adapted for constant use and do not fatigue easily. The individual red fibers are very fine and contain an abundance of compounds that make them efficient at aerobic respiration. These tissues are also high in both fat and sugar, which act as fuel for aerobic metabolism. Small songbirds, by contrast, can fly efficiently for hours at a time because they have a predominance of red fibers in their flight muscles.

So Can Turkeys Fly?

While turkeys can fly, they aren’t capable of sustained flight. The large muscles that we call “white meat” are adapted for explosive bursts of power—such as when one of these heavy-bodied birds is surprised by a predator and must escape in a flash of speed (turkeys have been clocked at 55 miles per hour). These muscles are powered by anaerobic metabolism and tend to fatigue quickly.

The opposite is true of ducks and geese. These birds are long-distance fliers, and their large breast muscles consist of dark meat that’s high in fat content.

Yet the birds with the greatest concentration of red muscle fibers in their flight muscles are not the ones that make the longest migratory flights. No, it’s the birds that utilize the highest number of wing beats during sustained flight.

And which birds are those? Hummingbirds, of course.

Since their populations have recovered throughout much of the US, turkeys are common sights in many regions. Have you encountered Wild Turkeys?  They can make quite a racket as they crash through the trees and underbrush.


Please share your stories and experiences below, we always enjoy them.

A great story about how the resurgence of turkeys in the wild has brought about many human-turkey encounters »

(5) CommentsPermalink


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Posted by Karrettel on 11/22

One of the greatest thrills as an outdoorsman is to call in a tom turkey and harvest the wary bird!  No matter what kind of call you use, it is a great experience and accomplishment.

Posted by Alan W. Reed on 11/22

There’s a very strange kind of disconnect, or denial, going on here. On the one hand, people who look at this website love to look at living animals, and to talk about them, and to get delight from considering how special they are. On the other, now they’re asked to consider one kind of animal, quite dead, and prepared for the table, and about to be eaten. It doesn’t make sense at all. If we love animals, and love them alive, then it is absurd to suggest we want to see them killed, and want to relate to them as dead food.

Posted by Mark Caponigro on 11/24

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