KUNGL. SV. VET. AKADEMIENS HANDLINGAR. BAND 52. N:o |7. 79 
Fam. Cypselide. 
Cypselus pacificus (LaATH.). 
Math. handl. n:r 403. 
Was observed in the beginning of Jan. at Sunday Island, in March and April 
at Derby and in Dec. in Mowla Downs. Was not common. 
Order Coccyges. 
Fam. Cuculidee. 
Cuculus inornatus ViG and HOoRsrF. 
Math. handl. n:r 405. SJ ad., 2 ad. Perth, W. A. 21/9 1910, worn plumage; SJ ad. Derby, Kimb. !7/10 
1910; J ad., I juv. Nooncanbah, Fitzroy r. 18/,, 9/1 1911, moult.; 2 juv. Hot Spring, ibid. 19/5 1911, moult.; 
92 ad. Derby, Meda ?/> 1911, the uppermost tail-feathers growing out; 3 2992 ad., 3 SS ad. Beagle bay, 
Damp. IE 4/9, SM Håa Halo Sk 19/7 TOT 
Juvenals. — The male juvenal of the 20th of Jan.: moulting, shows the 
transitional plumage between the juvenal male and the adult one; old, brown, buff 
and white feathers are left in the crown, back part of the head, scapulares and breast. 
Otherwise it has the newly-acquired dress of the adult male, but the secondaries are 
bordered with white and indented bigger marginal spots. The bigger wing-coverts 
also have broad white edges. 
The female juvenal of the 10th of March has a rather different dress. All the 
feathers bordered with white. The back and the crown of the head deep brown 
with buff feathers, especially on the back of the neck, the breast and the wing-coverts. 
The whole under-side with dusky brown bands and brown centres of the feathers. 
A ”buff-coloured girdle over the breast. The females differ in having stronger or 
fainter brown (buff) spots all over the upper side, some of them are, as in the male, 
uniformly stone-coloured beneath, without dusky bars and buff on the feathers, others 
have on the breast a broad buff band striped with deep brown. None has a uniform 
ashy brown back like the male. Specimen of the 2nd of May has particularly clear 
bands along the crown, two on each side, and one lighter buff-white central band, 
ending in the white spot of the nape of the neck. 
Moulting. — Specimen 3 ad., ”h, is in moulting. The old feathers are 
bleached to a faded brown colour and the newly-acquired ones are, as in newly- 
moulted specimens, ashy-brown. Wearing-phenomena are often seen in the white 
parts of the feathers. Moulting on the back but not in tail nor wings. The two 
juvenals are also moulting and wear a plumage transitional to that of the adult bird. 
Feathers are being changed on the crown of the head, the back and the breast. The 
outermost pair of tail-feathers appears to be just ready and possibly some of the 
wing-feathers too. On the other hand a female of the 2nd of May has the upper- 
