title is no coincidence that I put the book on birds published some years ago. Suffice it to see them maneuver in flight to be absolutely certain that dominate the air environment perfectly. As they get a few birds. The explanation of this fact is what in aviation is called wing loading. "
Male Montagu's harrier in flight.
Book: "Eaglets, Lords of the Air."
The "wing loading" is an aerodynamic parameter is obtained by dividing the weight of the bird between the area of \u200b\u200bthe wing or other airfoil (keep in mind that your calculation is set mainly in relation to aircraft). In modern aircraft directly affects many aspects of aerodynamic performance of aircraft, such as maximum weight at takeoff, climb rate (rise) or radio turn and its value ranges between 100 kg/m2 for commercial aircraft to nearly 600 kg/m2 for modern fighters. By contrast, planners have only 0.5 kg/m2. Consequently, a lower wing loading implies a greater ability to keep flying and better maneuverability in the air, both with reduced energy expenditure, and conversely a high wing loading requires high energy expenditure to achieve both. Macho
of Montagu's Harrier starting the flight.
Female Montagu's Harrier in flight.
The wing loading of birds and other flying animals has been studied for some time to attempt to apply knowledge gained to the aviation industry, but it was not until the 30's of last century with the discovery of strobe photography by Harold Eugene Edgerton, where he studied with precision the beating of wings, making sure the birds by bending the wing tips create a vortex (circular or rotary flow of wind) that eases the burden significantly increasing wing lift and can handle this by simply folding the wing, in addition to controlling other parameters such as angle attack or "laminar flow" by the movement of Alula, a key pen, located on the front wing is also essential to achieving a perfect landing, as it spreads out like lift devices. Should be completed, however, that according to research by the School of Aeronautical Engineering in London, this deployment of Alula in touchdown will not occur for the bird, but due to aerodynamic forces.
Male Montagu's harrier in flight.
Female Montagu's Harrier in flight.
wing loading limit for a bird to fly is estimated at about 25 kg/m2, with the Great Bustard (Otis tarda) the best known example of a bird that is almost in that range. On the contrary, Wandering albatross (Diomedea exulans), used to fly long distances for full days and stormy weather is a bird with a lower wing loading, allowing you to sustain flight with very little energy expenditure, taking advantage of rising thermals. Just what the Eaglets, as wing loading is also the lowest in the order of birds.
Male in flight.
Female in flight.
Well, after all this stuff, we go with our friends the Eaglets. With the true "Masters of the Air" and the majestic flight, which these days is intense and colorful than ever. And it is because they are in full courtship and display their incredible skill in performing spectacular aerial environment and rapid promotions chopped, low-flying at high speed, sharp turns, glides effective, and all sorts of acrobatics perplexing any observer, even the most seasoned.
couple Montagu's harrier in flight.
In these days when the annual campaign to conserve the various species of Aguiluchos is kicking off in Extremadura, and in which we are dedicated to the exact location of the colonies and the preliminary census number of partners, is when less time is short, and the more you can enjoy them. One can spend a long time watching them in their quest to showcase their skills and talents for the flight. It seems that often fly just for pleasure, the satisfaction of gliding through the air, feeling the wind in their feathers and proud to show the power and freedom they enjoy.
settling Female Montagu's Harrier.
of Montagu's Harrier Male perching.
One can not help but feel admiration for the perfect combination of beauty, elegance and power of those who boast, especially if you are lucky enough them a few meters, as I did a few days ago, when I used a hide to try to read one of the ring carrying a male Montagu's harrier (Circus pygargus), the five that make certain colony in La Serena.
Male in flight.
Although I did not get what I had proposed, since only got a partial picture of the ring in flight, totally useless, and every time that he did bird perched directly on the floor (his favorite) legs being covered with grass. Yet another pair of the colony was more kind to me, and as a result got some pictures of great interest to me especially useful to show in lectures and presentations on the anatomical characteristics of the species and capabilities described above for the flight. And of course, to illustrate this article and other publications that will undoubtedly come in the future. Macho
settling.
enjoyed a great time watching from afar the supply of material for the nests, the step of courtship feeding, and even some copulations. But what impressed me most was the "welcome group" dedicated to him a male Marsh Harrier (Circus aeruginosus) he came flying over the colony. Such animosity stems from the fact that the latter, larger and girth, sometimes the first nest predators.
Female in flight.
many years I have been devoting much of my free time for study and conservation of these magnificent birds, and away from air flirted get used to every year around this time I feel most admired and above all blessed by enjoy them. Glad to see you flying!
Male in flight.
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