KUNGL. SV. VET. AKADEMIENS HANDLINGAR. BAND 52. N:o |7. 87 
Monarcha alceto nitida GouLp. 
Math. handl. n:r 497. J ad. Sunday Island 5/2 1911, tail in moult. 
Moulting. — Three specimens that were shot were all in moulting. One female 
was strongly moulting, especially in the bluish black part of the head, in another 
specimen only the last pair of wing-feathers in each wing were growing out; otherwise 
it had new plumage. All the specimens had well-developed generative organs. 
Ecological. — The shining flycatcher was found in small numbers in the 
mangrove vegetation at Sunday Island. I saw it here sometimes and shot three 
specimens "5/2, ”fe. The bird was rather shy. I have noted that the strange 
sexual dimorphism that distinguishes the sexes made the female with its chestnut- 
brown plumage more visible in the mangrove than the male with its glossy greenish 
black one. 
The female was calling with a buzzing note which lacked sonority, and the male 
with a loud whistling. I remember, however, having observed that even the female 
sometimes had the latter call. 
Pachycephala rufiventris falcata GouLpD. 
Math. bavdl., n;ri 672. 2 ad. J ad. Derby, Kimp: ao Ja0yld TOR: rad rs juv., 2 juv. Meda, 
TGS re press FAL: 3 TT föl SR) TE ad. Beagle bay, Dampier 16 Jå SEEN fots (elr Sj klo an ÄR KO LIG 
Q ad. Sunday Island !/> 1911, moult.; NIBS dr Juv > ibid. 24, 1911, varies very dh from the others, moult. 
Juvenals. — Five specimens, all of them shot in May. Two of these are older 
juvenals SJS. Three juvenals have the same plumage, similar to that of the female. 
They are, however, pale orange-brown but much more covered with dark-brown 
central-streaks on the feathers, which are very distinct and broad. They also have 
a very slight olive tint over the upper part, which is absent in the aduits. The 
central streaks are also distinetly visible in the feathers of the upper surface. Two 
young males resemble the older female, but the black collar is strongly washed with 
grey, and the white throat has a tint of pale orange-brown and a few dark streaks. 
Variant (species?). Description of the specimen S juv. of the "1 1911 from Sunday 
Island. 
The specimen from Sunday Island differs very much from the specific character. 
Grey above but with a few sprinkles of orange-brown. HSecondaries with a broad 
margin of orange-brown. Greyish over the breast, lower part like the chin and throat 
whitish, with a very faint yellow tint, a few orange-brown feathers on the belly and 
sides. Under tail-coverts bright yellow, with a few orange-brown feathers. Upper 
tail-coverts olive-yellow, the whole tail olive-brown. Bill longer than that of the 
others, being 14 mm., that of the others being only 11,5 mm. The orange-brown 
spots on the belly might indicate that it is a juvenal, which was to get the lower 
part orange-brown. But what is extraordinary is that no black collar has begun to 
be formed, though the bird does not show any trace of the streaked juvenal plumage. 
(Does the juvenal of P. rufiventris ever lack the brown lower part, as in this specimen?) 
