RED-BACKED KINGFISHER.

Ceyx euerythra Sharpe, Cat. Birds Brit. Mus. (1892), 17,

179; Hand-List (1900), 2, 53; Bourns and Worcester, Minnesota

Acad. Nat. Sci. Occ. Papers (1894), 1, 45; McGregor and Worcester,

Hand-List (1906), 53.

Balabac (Everett); Bongao (Everett); Calamianes (Bourns &

Worcester); Mindoro (Bourns & Worcester, Schmacker, McGregor);

Palawan (Lempriere, Platen, Steere Exp., Whitehead, Bourns &

Worcester, Celestino, White); Tawi Tawi (Bourns & Worcester,

Everett). Malay Peninsula, Sumatra, Borneo.

Adult.--Above red, washed with lilac, heaviest on head and rump;

below deep yellow, strongest across the breast; chin and upper throat

white, washed with yellow; wing-coverts like the back; primaries

and secondaries black; first primary and the secondaries edged

with rufous; wing-lining yellow. "Iris dark brown; bill and feet

red." (Celestino.) Male, length, 140; wing, 58; tail, 23; culmen

from base, 40. Female, length, 140; wing, 58; tail, 24; culmen from

base, 40.

"We have fourteen specimens from Tawi Tawi, Palawan, and the Calamianes

Islands and they show some interesting plumage changes which were

for some time a puzzle to us.

"An adult pair in high plumage from the Calamianes have entire upper

surface of body red, washed with lilac, most heavily on head and

rump. Wing-coverts and scapulars like back. Secondaries rufous with

broad black shaft-stripes. Primaries black, the first rufous for

entire length of outer web and most of the others showing a small

amount of rufous at their tips. Under surface of primaries washed

with rufous on inner webs. Chin and throat white faintly tinged

with lemon-yellow. Remainder of under surface deep golden-yellow,

darkest on sides of breast and flanks. A yellowish white patch behind

ear. Under tail-coverts golden yellow, tipped with rufous. Tail uniform

bright rufous above and below. Under wing-coverts and axillars golden

yellow. Bend of wing rufous.

"This plumage we take to be typical for fully adult birds in fine

feather. Two females from Palawan agree with this description except

that in one the secondaries show rufous only on under surface of

inner webs, and that the primaries show no rufous except on basal

half of outer web of first. The under wing-coverts, axillars, and

bend of wing are light rufous instead of yellow.

"Sharpe, Ibis (1894), 246, reports an adult male of this species

from Bongao and a female from Tawi Tawi. We note certain differences

shown by our Tawi Tawi specimens, of which we have twelve. Of these

four agree with the Calamianes birds except that the scapulars show

more or less black at their bases and that the secondaries show more

of black. Among the remaining specimens, however, there are some

curious variations.

"First it is to be noted that in three fully adult birds beginning

to molt the under surface is pale dirty yellowish, the throat white.

"In two of the birds a few scattered yellow feathers are appearing

in the white of the throat. This then is the worn-out plumage of

old birds.

"A male with rich yellow under surface and white throat has some of

the scapulars entirely black, tipped with blue, the remainder being

tipped with lilac. Some of the wing-coverts are black, tipped with

blue. No rufous on primaries except on outer web of first.

"Another bird has chin and throat pure white, the breast mottled with

golden yellow and light cinnamon-rufous. Feathers of abdomen nearly

white, tips washed with rufous. Under wing-coverts and axillars

cinnamon-rufous. A little more black in the scapulars than the

preceding. Tail with broad black shaft-stripes on apical half of

under surface of feathers.

"Another specimen has chin and throat pure white. Sides of face,

breast, flanks, under wing-coverts, and axillars cinnamon-rufous,

deepest on the breast. Abdomen nearly white. A few golden-yellow

feathers appearing on breast, flanks, and abdomen. Scapulars, except

a few of the smallest, black quite broadly tipped with blue; tail

with tips of all its feathers black.

"Finally, a single specimen has under surface as in preceding except

that yellow feathers have not begun to appear. Scapulars and inner

third of inner secondaries black, the former tipped with blue, the

latter with rufous washed with lilac. Tail with apical two-thirds of

feathers black washed with rufous on edges of webs. The bill of this

last bird shows signs of immaturity, being blackish toward the tip

instead of clear scarlet.

"We were at first greatly puzzled by these birds, as the black

scapulars with their blue tips form a striking marking and with

a single exception the bills of our specimens showed no sign of

immaturity. After carefully examining the whole series, however, we

are convinced that the cinnamon-rufous under surface, tail-feathers

tipped with black, and black scapulars tipped with blue are themselves

signs of immaturity, the black gradually disappearing with age,

and yellow feathers appearing on the outer surface until the plumage

first described by us is reached. This finally becomes worn and soiled

giving the dirty yellowish under plumage already noted. Our Tawi Tawi

birds were shot late in October and early in November, Palawan birds

in December, and Calamianes birds in January and February." (Bourns

and Worcester.)

"Usually found along the banks of fresh-water streams in the forest,

not, however, strictly confined to banks of streams, but sometimes

met with in the woods away from water.

"Iris very dark brown; bill, legs, and feet scarlet. Food shrimps

and insects, in one case small lizard and crabs. Eighteen specimens

average as follows: Length, 140; wing, 58; tail, 24; culmen, 37;

tarsus, 8; middle toe with claw, 16." (Bourns and Worcester MS.)

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