(1782) Ichthyophaga humilis humilis.
THE MALAYAN GREY-HEADED FISHING-EAGLE.
Falco humilis Mull. & Schleg., Verh. Nat. Gesch., Aves, p. 47 (1840) (Sumatra). Polioaetus humilis. Blanf. & Oates, iii, p. 371 (part.).
Vernacular names. None recorded.
Description. Very similar to the preceding bird. The head is often a purer grey, the crown less brown and the feathers above and below black-shafted; primaries always more or less mottled on the inner bases with white; central tail-feathers dark brown with pale tip and a broad blackish subterminal band ; lateral tail-feathers mottled white and brown on the basal two-thirds or more ; in very old birds the white almost disappears.
Colours of soft parts as in I. ichthyaetus.
Measurements. Wing 354 to 397 mm.; tail 174 to 205 mm.; tarsus 66 to 73 mm.; culmen 38 to 43 mm.
Young birds differ from the adult much as the young of the Large Grey-headed Eagles do.
Distribution. Tenasserim, Malay Peninsula to Sumatra.
Nidification. In Tenasserim this Fishing-Eagle breeds from December to March, building a nest of sticks lined with green leaves similar to that of the preceding species. The only four eggs I have seen, two pairs, vary between 55-1 x 50-2 and 68*0 x 53.1 mm.
Habits. A forest-bird, keeping to the banks of rivers and feeding almost entirely on fish and reptiles. Like the preceding race it Keeps to the hills and broken ground and is never found in the estuaries like the larger species.