Speckled Mousebird

This bird is about 35 cm (14 inches) long, with the tail comprising approximately half the length, and weighs about 57 grams (2 oz). It is well-named, because it is dull-mousy brown in overall color on the back and on the head (including a prominent crest). The bill is black on the upper part and is a pinkish color on the lower part. The Speckled Mousebird is not known for its voice, as songbirds are, although it is a noisy creature. They make a warbling tsu-tsu call while in flight, and are known for their tisk-tisk alarm call while in flight. - Wikipedia