Ocellated Antbird

The ocellated antbird is a largish antbird with a long bill and tail. It is 17.5 to 20 cm (6.9 to 7.9 in) long and weighs about 50 g (1.8 oz). Females tend to be slightly smaller than males and weigh slightly less. The species conforms with Bergmann's rule, with birds closer to the Equator having smaller wings and bills than those further away. Except for their slight size differences, the sexes are otherwise the same, and the subspecies have very little variation. Adults have a brown-gray crown, a rufous-brown nape, bright blue bare skin around the eye, and black cheeks and throat. Voice: The ocellated antbird's primary song is a loud "high, thin series of whistles that rises then falls, with latter notes gaining in harsh quality" that has been written as "peee-peee-pee-peepee-ee-ee-ee-ee-ee-ee-ee-eer-eer". It also has a fainter version of the song with more notes but without the harsh ending and another version with "chirring" notes interspersed.