282 MANUAL OF PHILIPPINE BIRDS. 
Adult.—Forehead, lores, and sides of face grass-green connecting with 
the grass-green collar of hind ne crown and occiput bright blue; rest 
of upper parts green, yellowish on the mantle and more or less mixed 
with light blue on-:the back; below yellowish green, becoming clear green 
on abdomen and under tail-coverts ; primaries blackish on inner web, dark 
green on outer web, tips of shorter ones blue; secondaries mostly blue 
with light green edges; tertials green with blue tips; alula and primary- 
coverts dark blue, black along the shafts and more or less washed with 
green; distal greater and median coverts bright blue with yellow-green 
margins; proximal greater and median coverts with the middle black, 
surrounded by a narrow line of bright blue followed by a wide edge of old’ 
gold; lesser coverts black, some of the proximal ones bordered with blue 
and old gold; tail grass-green above, dark golden yellow below. 
Iris very pale straw, a narrow inner ring of darker yellow; upper 
mandible bright scarlet, except tip which like the lower mandible is dull 
yellow, cere black; legs dull green; nails dark horn. Length, 300 to 
330 mm. Specimens from different parts of the Archipelago vary greatly 
in measurements and colors. The sexes do not differ except that the 
female is a little the smaller. Four males from Ticao average: Wing, 
195; tail, 132; culmen from cere, 33; tarsus, 18. Two females from 
Ticao average: Wing, 187; tail, 126; culmen from cere, 28; tarsus, 18. 
Y oung.—Differs from the adult in having little or no blue on the head 
and face which are green ; back largely sky-blue; blue of wings and coverts 
largely replaced by green; the coverts bordered with light yellowish 
green. 
“The Philippine green parrot is the common cage bird of the natives, 
who have doubtless aided in its dispersal. Escaped cage birds were shot 
by us on several occasions. Called ‘picoi’ by the natives. Occurs in deep 
forest, but is also very common in the open, especially about dead trees, 
where it nests in natural cavities or in deserted holes of the great wood- 
peckers (Thriponaz). 
“Tris of male birds has an outer ring of white and an inner of brown; 
iris of females light yellow; legs and feet drab, nails black; bill scarlet, 
yellowish at tip. Fully adult specimens show very great variability as 
to size, running from 300 to 395. Fourteen males from Tawi Tawi meas- 
ure 325 in length; wing, 191; tail, 126; culmen, 29; tarsus, 16; middle 
toe with claw, 29. Two females from Masbate measure, length, 311; 
wing, 180; tail, 124; culmen, 30; tarsus, 17; middle toe with claw, 35.” 
(Bourns and Worcester MS.) 
Grant finds some very considerable differences among specimens of this 
species from various islands but evidently he considers them to be of less 
than even subspecific value. Possibly this species will eventually be split 
into several subspecies or races. 
*In many specimens otherwise in adult plumage, the cheeks are green, but this 
seems to be invaded by extension of blue from the crown as the birds become older. 
