Tariq Mahmood, Shafqat Rasool, Faraz Akrim, Shaista Andleeb, Muhammad Sajid Nadeem and Fiaz Nadeem, 2018. Diversity and Nest Characteristics of Owl Species Inhabiting Margalla Hills National Park Islamabad, Pakistan. Pakistan J. Zool., 50: 1593-1596. DOI: http://dx.doi.org/10.17582/journal.pjz/2018.50.4.1593.1596