(1723) Falco cherrug milvipes.
THE SHANGHAI FALCON,
Falco milvipes Hodgs. in Gray's Misc., p. 81 (1844) (Nepal) ; Blanf. & Oates, iii, p. 421.
Vernacular names not distinguished from the preceding bird.
Description. Differs from F. c. cherrug in having the whole of the upper parts a darker brown-barred everywhere" with pale dull rufous; the central tail-feathers are barred, not spotted, and the primaries are marked with rufous on the outer webs ; the moustachial streak is broader and blacker and the sides of the head more streaked with black; the crown is darker and more rufous and the underparts marked with darker brown.
Colours of soft parts as in F. c. cherrug but with a darker bill, more bluish-slate than ivory-white.
Measurements. Wing, 340 to 351 mm., 374 to 435 mm.: tail 188 to 236 mm.; tarsus 50 to 60 mm.; culmen 25 to 27 mm.
Young birds are very similar to that of the preceding bird But are darker and generally have the tail with complete cross-bars.
Distribution. Central Asia East of the range of the preceding race, Turkestan, Tibet, Mongolia and Setchuan. In Winter to Baluchistan, India and South China.
Nidification. As far as is known this Falcon breeds in the mountains of Central Asia in April, making its own nest on ledges or in crevices of cliffs. The normal full clutch seems to be three, less often four. The eggs are like those of Peregrines and nineteen average 55.6 x 42.3 mm.: maxima 57.6 X 41.2 and 57.0 x 44.0 mm.; minima 53.6 X 43.0 and 57.5 x 41.0 mm.
Habits. Apparently similar to those of the preceding bird but it is more exclusively a bird of mountainous country. The earlier records of the two birds have been much confused so that it is not easy to say what refers to which.