Stripe-backed Bittern

Stripe-backed bitterns are very small, averaging from 28 to 35 cm in length. Their pale brown back is ornamented with both black and yellowish-beige streaks, the latter also running along their broad wings. The colour patterns on their back complements the ones on their wings as to suppress obvious contrast between the two. Black stripes continue their way on the darker brown crown, while the underbelly is lighter brown and striped with white. As for the beak, the colour can differ from pale green to orange. Voice: Sounds have been elaborately described and are sometimes the best way to determine the presence of stripe-backed bitterns, emitting calls through distinct, low-pitched ooks, or through gargling. Territorial or warning vocalizations consist of four low-pitched short "huu" or "ook" notes, followed by a second type of vocalization; a faster and higher-pitched "g'u'u'u'a'a" gargle.