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Mr. Acid

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Submitted By sheetosteto
Words 278
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مجلس أبو ظبي للتعليم
مدرسة الزلاقة
مادة العلوم

تقرير عن
أشهر الحيوانات المهددة بالانقراض : (طائر الكيوي )

عمل الطالبة

الحيوانات المهددة بالانقراض
هي تتعرض للاختفاء والانقراض نتيجة عدة اسباب منها التغيرات المناخية وعدم التأقلم على هذا التغير ومن الاسباب ايضا عدم قدرة الحيوانات المهددة بالانقراض على التكيف مع علاقات التنافس والافتراس مما يجعلها عرضة اكثر للحيوانات المفترسة.
اشهر الحيوانات المهددة بالانقراض : (طائر الكيوي )

اول الحيوانات المهددة بالانقراض الكيوي Kiwi حيوان من صنف الطيور, من حيوانات نيوزلندا, ورمزها القومي. الكيوي من الطيور ولكن ليس لها أجنحة لذا لا تستطيع الطيران, ولها أرجل طويلة نسبيا وقوية في نفس الوقت تساعدها على الجري السريع للهرب من أعدائها حيث يعتبر الجري الوسيلة الوحيدة لدها للدفاع عن نفسها من أعدائها, يغطي الريش الناعم جسم الكيوي بشكل منسدل. تضع طيور الكيوي بيضها في أعشاش على الارض مخبئة بين الأعشاب والذكر هو الذي يرقد على البيض مدة 80 يوم أكد عالم في شئون الحيوان في تقرير له نشرته صحيفة «فرتبرت زولوجي» الصادرة في جمهورية التشيك أن الوقت ينقضي في سبيل الحفاظ على طائر الكيوي الجميل في نيوزيلندا من الانقراض رغم الجهود المبذولة لذلك الغرض.
وتوقع جيمس سيلز وهو خبير من جنوب أفريقيا أن تتراجع أعداد ستة أنواع من طائر الكيوي في نيوزيلندا بحلول العام المقبل إلى أقل من 57 ألف طائر كما سيتراجع نوعان آخران إلى مئة طائر فقط لكل منهما، وكان الخبراء أشاروا قبل عشر سنوات إلى وجود أكثر من 85 ألف طائر كيوي الذي لا يطير.
وأطلقت سلطات نيوزيلندا برنامجا لحماية الكيوي في عام 1991 للحفاظ على أنواعه من الانقراض بعد أن صار ضحية للقطط والكلاب والحيوانات المفترسة. لكن سيلز قال إن أعداد الكيوي تتراجع في الوقت الذي لم يدرك فيه العلماء بعد بشكل كامل أن هذا الطائر النادر يقارن بطائري الأمو والنعامة.

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