I04 
The Emu. 
age shows a conspicuous marking of yellow upon the throat and 
the sides of the neck. One still older {c), and, in addition, a fully 
adult specimen {d), show no yellow. This makes the species 
dichromatic. 
a. Young male, recently out of nest, ist February, 1900. 
Similar in general appearance to the adult. Whole of body 
plumage except quills, wing-coverts, and head soft and loose, 
owing to absence of hooklets ; tail quills tipped with sandy-buff 
and darker than the upper tail coverts, inner webs of secondaries 
sandy-buff ; throat feathers silvery-white ; wing, 4.75 inches ; 
culmen, i inch. [Irides dark brown ; legs and feet dull bluish- 
grey.J Wing coverts edged with sandy-buff. 
c. Young female, 31st January, 1900. The like plumage to a 
has been moulted, and the plumage is now of true feathers. The 
only trace of yellow is in a solitary feather on the right side of 
the neck ; chest feathers have white tips, the white contracting 
as it goes down the rachis ; under tail coverts brownish along 
the centres ; inner webs of secondaries pale fleshy-grey ; throat 
feathers silvery-white ; wing coverts uniform with back ; tips of 
tail quills creamy-white ; bill and bare patch round eye black ; 
cheek, below eye, blue-black. [Irides brown ; legs and feet 
greyish-brown.] Wing, 4.9 inches ; culmen, 1.2 inches. 
b. Immature male, 20th January, 1900. The conspicuous 
difference between this and a is the prominent patch of yellow 
on the throat and sides of neck, and broad white edging of many 
of the mantle feathers and narrow border upon others as low as 
the rump ; the outer edges of the secondaries are dull yellowish- 
green. Wing, 4.85 inches ; culmen, i.i inches. 
d. Adult male, 31/1/00. No trace of yellow in plumage; tips 
of tail uniform with the brown of quills; chest feathers much 
frilled; throat feathers moulting; wing, 5.25 inches; culmen, 
1.35 inches. 
[In the early morning (July) a large number of this species 
gather in a huge "boab" tree in front of the house I am staying 
at and hold a " corroboree." One seems to lead, and the rest 
join in the chorus. After the song they fly to a second tree and 
repeat the performance, keeping it going for about an hour. 
After this they leave for their feeding grounds, at present in the 
blossoming bauhinia trees. 
On 31st January I found a nest with three eggs instead of 
two, the usual clutch, as well as I know.] 
29. PSEUDOGERYGONE CULICIVORA (Gould), Western Fly-eater. 
Gerynone cidicivora^ Gould, Birds Aust., foL, vol. ii., pi. 99 (1848) ; 
Sharpe, Cat. Birds Brit. Mus., vol. iv., p. 220 (1879). 
a. Adult male, 29/8/00. 
b. Young (sex not marked), 29/8/00. 
Description of Young. — The tail early serves as an index to 
the species. It is a miniature. Around the eye is a tawny 
