Enviromental Factors Affecting Birds

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Of the vertebrates, birds of the class Aves are the most noticeable, the most melodious and the most beautiful. Birds with more than nine thousand species far put number other vertebrate groups except fishes” . (Hickman P.C Jr , et.al pg 582). Birds are the only vertebrates that have feathers and forelimbs modified for flight although many species do not use their wing for flight. Birds can be found all over the world including Guyana. There are many factors affecting birds in Guyana. Deforestation is one of the factors affecting birds on Guyana. “Deforestation is the clearance of forest by logging and or burning”. (http://wikipedia.org/wiki/Deforestation) .In Guyana There are many causes of deforestation and all these causes such as logging, mining and slash and burn for agricultural porpoises which can cause forest fires and the building of homes, have affected birds one way or another that live in or around these areas that once had pristine forest, by destroying their habitats. Deforestation affects the birds’ ability to find nesting sites, materials needed to build these nest, its ability to find mates to produce the next generation, food to feed themselves and their young. One of the birds affects is the Harpy eagle and there are many others such as wood peckers. Another factor affecting birds are pesticides. Although many pesticides that have harmful effects on birds have been banned in other countries, these pesticides are still use in Guyana because they are inexpensive. These pesticides include insecticides, rodenticides and herbicides. These pesticides that are harmful to birds are fat soluble and long lasting (stay in the environment for long periods of time) and have the ability to biomagnify that is the pestici... ... middle of paper ... ...e on the verge of extinction and many other their status is not known. Deforestation, illegal trade, water pollution, pesticides and climate change are all factors affecting birds in Guyana. Works Cited • http://www.bcb.uwc.ac.za/envfacts/facts/deforestation.htm Created and maintained by: Jocelyn Collins Last Updated: Thursday, February 01, 2001 Date access 15, October 2010. Date access 16, October 2010. Author and dates last updated unknown . • http://wwf.panda.org/about_our_earth/aboutcc/problems/impacts/species/cc_and_birds/ • http://www.chem.duke.edu/~jds/cruise_chem/pest/effects.html • http://www.suite101.com/content/birds-and-pesticides-a25855 • http://www.sciencedaily.com/releases/2007/06/070604205627.htm • http://pmep.cce.cornell.edu/profiles/extoxnet/carbaryl-dicrotophos/ddt-ext.html • http://www.wrm.org.uy/deforestation/LAmerica/Guyana.html

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