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Bald eagle (Endangered Species)

Pygargue À Tête Blanche

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Bald eagle (Endangered Species)

The population of bald eagle is not all that large in Québec.  During the last century, several phenomena have served to take their toll on the population. 

PygargueThe Island of Anticosti offers many excellent nesting sites for the bald eagles.  In the Ottawa Valley region, they generally live near large lakes and hydroelectric reservoirs.  Those are the two regions in Québec where they are found in greatest abundance.

Early in the 19th century, their numbers began to decline because of the burgeoning settlement in North America.  Trees were cut down to make way for farmland, which deprived them of a great many areas where they once nested.  Furthermore, the settlers thought they were a menace to the animals they were raising and had no qualms about exterminating us.

Between 1930 and 1970, the effects of the pesticides that were being spread in the environment proved to be even more lethal.  They contaminated the food sources; the shells of the eggs became thinner which meant that the chicks died or were born with defects … all of which caused a sharp drop in their numbers throughout the eastern regions of the continent.

PygargueLogging and mining activities are two major factors that have wreaked havoc in their habitat.   Deforestation and all the areas that were cleared for roads have depleted their nesting sites.

Disturbances during breeding season can often have dire consequences.  The bald eagle must abandon his nest before the eggs are hatched. 

The young ones are forced to flee before they’ve learned how to fly properly, which makes them easier prey for predators.

Human encroachment continues to reduce the numbers of prey that we rely on to survive through the winter.  Sometimes, the fish they eat poison them because they’ve been contaminated by heavy metals such as lead and mercury.

The creation of refuges and man-made nesting platforms along with the reinstatement, back into the wild, of young eagles raised in captivity, have all helped to restore the population levels.

PygargueSeveral protective measures now limit human activity in and around the bald eagles’ home ranges. However, accidental entrapment, contamination and loss of habitat are all ongoing threats.  The bald eagle population remains low and is slow to recover. The bald eagle is designated as a species at risk.

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Links
Ressources naturelles et faune Québec Liste des espèces vulnérables et menacées au Québec - Pygargue à tête blanche
Comments

Pygargue

Par gosselin, 2014-11-29, 04h54

je demeure à Deschaillons sur St- Laurent G0S 1G0.Novembre 2013 et aujourd'hui novembre 2014. J'ai la chance de voir un couple dePygargue à tête blanche, L'oiseau se perche sur un arbre en hauteur sur le bord du fleuve tout près de la marina , actuellement il est en attente depuis plus de 1 heure.désolé je ne peux envoyer de photo.

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