White-eared Bulbul (Pycnonotus leucotis); Adult, Gender Unknown; Bimmah Sinkhole, Muscat, Oman.
House Sparrow (Passer domesticus); Adult, Male; Bimmah Sinkhole, Muscat, Oman.
White-spectacled Bulbul (Pycnonotus xanthopygos); Adult, Gender Unknown; Bimmah Sinkhole, Muscat, Oman.