The brown swan (Pelecanus occidentalis) has many fame. It is the national bird of the Turks and Caicos Islands, a Louisiana bird, an expert diver, and an environmental success story.
It is back again from extinction in the United States. During the early brown gates of 1900 they can be found along the Atlantic, Pacific and Gulf of Mexico coasts – from California to Chile and from Maryland to Venezuela. However, by 1960 this bird had disappeared from Louisiana, the Bejaia state and most of the coastal areas of the United States of America. The main reason for this decision was DDT pesticide. The d. D. T in the coastal waters of agricultural land and then entered the food chain. As these swans ate polluted fish, they laid eggs with thin shells. Since the brown swans incubate their eggs by carrying them under their narrow feet rather than their breasts, the eggs are broken from the parents' weight. After DDT and similar pesticides were banned in 1970, the brown Swan population began to recover. From 1970 to 2009 the brown swan was on the list of endangered species.
Just months after being removed from the list of endangered species, the brown swan is fighting again for its presence in the waters of the Gulf of Mexico. On April 20, 2010, a deep drilling rig exploded and caused an oil spill that threatens much of the Gulf of Mexico wildlife including the brown swan. Because this bird depends on the Gulf water for food and the catchy islands for nesting areas, this environmental disaster can reflect its remarkable revival over the past 40 years.
The brown swan is really an incredible bird. It is smaller than swans but definitely not a small bird. Its length is 4 to 5 feet and has wings of 6 to 8 feet wide. The beak revolves around a long foot and has a very large leather bag used to collect fish and water. Pouch can also be pulse to allow for cooling during daytime heat. The swan on the ground can look awkward and awkward but wonderful in the air. They can go up and slide low over the water looking for fish.
The brown swan is a great maker. Fly the swan across the water in search of men, herring, mollet, sheepshead, silversides and other fish. When the fish are spotted, they dive into your head first to catch their food and net the fish and water in their pod. When they come to the surface, they drain water from their pod and swallow fish. The gulls sometimes try to steal fish from a swan bag. In fact, the gulls will sit on top of the swans waiting for the right moment for the strike. The swan is the only swan that is diving.
Brown swans live only in marine waters. They are rarely found at home. Most of the time, they are 20 miles from the beach. They prefer bays and other shallow waters. These birds are nesting in a very herd of male and female swarms all year round. They build nests on the islands. They live on land or in the lower areas of trees or shrubs if predators are close. They mate for life.
The brown swans suffered from loss of nesting sites due to coastal erosion. There have been some efforts to rehabilitate major nesting areas. The elimination of DDT and the restoration of nesting sites made the brown swan a true environmental success story.
The swan is now threatened again by the Gulf of Mexico oil spill. The brown swans way of life makes them vulnerable to this oil spill. The oil spill can affect these birds in the following ways.
1. As you dive into the water to eat, they dive in and cross the oil that covers the feathers. Depending on the amount of oil present on the feathers, they may be exposed to body temperature reduction or even drowning.
2. Eating oil or fish contaminated with oil may cause illness or death to these birds.
3. Even if the oil does not cause damage to these pelicans, it can cause a decrease in fish available for food. Since adult pelicans can eat up to 4 pounds of fish a day, any reduction in food supply can cause significant damage to the herds.
4. Because spring, swans and many other marine life and birds produce sons. Some pelican eggs are found with oil smears. Scientists do not know what effect smudges may have. Porous egg shells in order to allow the embryos to exchange CO for oxygen. If there is enough oil on the shells, the embryos can suffocate or suffer significant damage from the oil.
5. Volatile organic compounds (VOC), the toxic components of oil, can pass through the egg shell and cause almost certain death to the fetus.
6. When embryos are born, they will face the same threats from contaminated oily fish and oil that their parents face – they will only be much weaker and much smaller.
To learn more about efforts to rescue brown swans and other birds threatened by oil spills, go to the International Bird Rescue Research Center (http://www.ibrrc.org).
It is not known how much damage will happen to the swamp structure of the oil spill in the Gulf of Mexico. Only time can prove. Forty years of work can go down but this amazing bird has recovered from ecological disasters before. He has proven to be a fighter completely and if necessary, he can deter again. Not all brown swans live throughout the Gulf of Mexico and can therefore be transported back as they were after the ecological problems of de. D. The flashes can recover again.
The Gulf of Mexico will not be the same until the brown swans build nests safely on the islands, dive into the water for fish, and wrap around the docks and berths waiting for those uncontrolled fish. Brown swans are an integral part of what makes your Gulf of Mexico.