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Bald Eagle
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| [Note Guidelines] Photographer's Note |
Bald eagles live in isolated virgin forests that are found near oceans, lakes, marshes and wetlands. The reason the bald eagle is limited to these mature forests is because the trees must be strong enough to support their nests. Eagles' nests can be as large as two to three meters in diameter, and can weigh up to one tonne. After wintering down south, eagles will return to the same nests. These nests are usually built within two-hundred kilometers of where they were raised
As deforestation destroys the mature forests, the eagles' nests are also destroyed, leaving them no place to raise their young. This frequent habitat destruction may have diverse effects on the eagle, such as setting back their reproductive cycle. This is because they will have to spend time and energy relocating to a suitable forest and rebuilding the enormous nests in which to hatch their young. This added stress may result in the reduction of the eagles brood size and to delayed hatchings. The forest industry's attempts to rebuild forests that have been previously cut down, are often not successful in supporting the bald eagle's nests. This is due to the fact that second growth trees are not as strong as those in mature forests. The replacement of coastal forests by "concrete trees" not only affects the bald eagle's habitat but also their feeding habits.
Eagles live within 100 meters of water because their main staple is fish. This can often be substituted by rodents, rabbits and other small birds when the fish supply is not abundant. As eagles are usually found to live so close to their food source, cutting down trees near the water's edge could result in a decrease in the number of bald eagles.
It is up to us, as humans, to consider the ecological costs of our manipulations of the environment.
Note: Image : 2560X1920 pixels
Resolution : 72X72 dpi
Color representation : sRGB
Focal length : 29 mm
F-number : f/4
Exposure time : 1/400 sec.
ISO speed : ISO-80
Meterin mode : spot
Exp.compensation: 0 step |
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