Size The pygmy eagle is one of the world's smallest-known species of
eagle and smallest living member of the
Aquilinae subfamily, One study estimated the body mass of males of the species to fall around while that of females to fall around .
Identification The pygmy eagle shares many characteristics with its counterpart the
little eagle. The most notable differences are color. The pygmy eagle has darker more pronounced streaks on the nape, crown and ventral. The bird also shares characteristics with the
booted eagle, both eagles have a unique underwing pattern. The
plumage of the pygmy eagle can vary depending on the morph, light or dark. The dark morph is very similar to the dark morph of the little eagle, while the light morph shows the most differences that occur in the dark streaking. The dark morph seems to be rarer as 10 out of 11 field sightings have been the light morph. The feet of the eagle are described as grey or dull yellow.
Voice The voice of the pygmy eagle has been described as a "
sip sip yeeee" during flights. The call can also be compared to the
little eagle and
booted eagle. The bird has also been observed giving a weaker single tone squeal. ==Distribution and habitat==