420 PYCNONOTIDA. 
(435) Pycnonotus plumosus robinsoni. 
Rogiynson’s OLive BuLBUL. 
Pycnonotus robinsoni Ogilvie-Grant, Fasciculi Malay., p. 85 (1905) 
(Patani, Malay Pen.). 
Vernacular names. None recorded. 
Description. Differs from P. plumosus ‘by having more dis- 
tinct white shaft-streaks to the feathers of the cheeks and ear- 
coverts ; the outer edges to the quills dull greenish, not olive-green, 
and the middle of the breast and belly pale yellowish white.” 
This form is nearest to P. p. blanfordi, from which it is 
separable by its much darker plumage above and below. 
Colours of soft parts. Iris brown; bill brownish-horn ; legs 
and feet blackish-lead. 
Measurements. Much the same as those of P. p. plumosus. 
Wing 83 to 89 mm.: culmen about 15 mm. 
Distribution. From Patani in the extreme South of Peninsular 
Siam, up the East Coast, perhaps entering the borders of Tenas- 
serim near ‘Tavoy, as far North as Ayuthia, Natrang and 
Kraven. ‘There are also specimens in the British Museum col- 
lection from Annam. 
Nidification. Messrs. Williamson and Herbert collected and 
examined vast numbers of nests and eggs of this Bulbul round 
Bangkok, where it is exceedingly common. They are quite 
indistunguishable from others of this genus but when considered 
as a whole are very poorly marked, pale eggs with none of the 
rich variations seen in so many Bulbuls’ eggs. 100 eggs average 
21:6 15:6 mm., the extremes being 23:0 x 16:2, 22: 2 x16 and 
20°71 x 151 mm. 
The birds breed in hight and heavy forest and also in serub and 
bushes round about cultivation and villages. Out of 76 clutches 
examined by Mr. W. Williamson only four nests contained three 
eggs, tne rest only two each. The breeding season is trom 
January to July. 
Habits. They are very familiar birds, far more so than the 
Large Olive Bulbul, and freely enter gardens, orchards and 
cultivated country. In winter they are found in small flocks and 
are restless, energetic birds, constantly flying from one tree to 
another in sei arch of their food, which consists of berries and insects. 
(436) Pycnonotus plumosus blanfordi. 
Buianroryd’s Onive BuLBUL. 
Pycnonotus blanfordi Jerdon, Ibis, 1862, p. 20 (Pegu); Blanf. & 
Oates, i, p. 291. 
Vernacular names. Byw, Bo-sa-mwe (Burmese); Bo-sa-mwe 
(Kachin). 
Description. Differs from Robinson’s Olive Bulbul in being 
