Detailed Instructions:  Given a sentence in the English language, translate it into the Nepali language.
Problem:Text: Cats have been known to extirpate a bird species within specific regions and may have contributed to the extinction of isolated island populations.

Solution:

Show your work and conclude with the exact phrasing "Therefore, the final answer is [answer]." where [answer] is just the final number or expression that solves the problem.
user
बिरालाेहरू कुनै निर्धारित क्षेत्र भित्रकाे चराका प्रजातिहरूलार्इ सखाप पार्ने भनेर चिनिन्छन् र अलग्गै रहेका द्वीपहरूका चराकाे प्रजाति लाेप हुनुमा तिनीहरूकाे हात रहेकाे हुनसक्छ ।
