426. Pycnonotus aurigaster xanthorrhous

(426) Pycnonotus aurigaster xanthorrhous Anderson.
THE KACHIN HILLS YELLOW-VENTED BROWN BULBUL.
Pycnonotus aurigaster xanthorrhous, Fauna B. I., Birds, 2nd ed. vol. i, p. 411.
This is a North-Eastern Burmese form, being obtained from the Kachin and Bhamo Hills to Karenni. It is common in the Shan States and extends into Yunnan and China. This seems to be the most common form of Bulbul in the Kachin and Bhamo Hills between 2,000 and 6,000 feet, breeding round villages and in open scrub, bamboo-jungle and even in gardens and inside the villages if there is bush-cover.
The first record of its nest appears to be that of Harington (Journ. Bomb. Nat. Hist. Soc. vol. xvi, p. 740, 1906):—“ Sinlum Kaba is a great place for Bulbuls; P. xanthorrhous was, however, the commonest. I was, unfortunately, too late for the majority of birds, which had all hatched out and the young birds on the wing. I, however, found two nests, one containing two fledglings and one addled egg and the other three hard-set eggs. Both were found in scrub-jungle and placed about 3 feet from the ground, and were of the usual Bulbul type but more compact and neatly made.”
Later (ibid. vol. xix, p. 121, 1909) Harington says : “It always seems to build its nest within two or three feet & the ground, generally placing it in a bramble bush among long grass and weeds.”
In Kalaw (ibid. vol. xxii, p. 269, 1913) Cook found them “very common in the scrub. I found several nests. These were cup¬shaped and very neatly made of grass and bracken, and lined with fine grass. The usual site chosen for the nest was a raspberry bush, but I have found several nests built in thick clumps of grass close to the ground. The date of the first nest was April 3rd and of the last nest April 28th, containing fresh eggs.”
The normal number of eggs laid seems to be three ; sometimes only two are laid, and once Pershouse “took a beautiful clutch of four eggs, in an advanced stage of incubation,” at Sinlum Kaba. He adds : “All the nests of P. xanthorrhous I found were in bracken and none in long grass or weeds.”
From the above notes April would seem to be the month in which most eggs are laid, some in the end of March and a good many during May.
The eggs are just like those of Molpastes c. bengalensis but with very little variation. The ground is white to very pale creamy white and the marking consists of purply-red small blotches, dis¬tributed in most eggs thickly over the white surface, but forming rather denser confluent caps or rings at the large end. Other eggs have the markings smaller and more sparse, while I have one pair of the white type with quite tiny specks of purplish-brown all over the surface, very numerous but not very dense. As a whole they are rather richly marked eggs.
Thirty eggs average 21.7 x 16.2 mm. : maxima 23.5 x 6.5 and 21.3 x 16.8 mm. ; minima 21.0 x 16.0 and 21.1 x 15.8 mm.

BookTitle: 
The Nidification Of Birds Of The Indian Empire
Reference: 
Baker, Edward Charles Stuart. The nidification of birds of the Indian Empire. Vol. 1. 1932.
Title in Book: 
426. Pycnonotus aurigaster xanthorrhous
Spp Author: 
Anderson.
Book Author: 
Edward Charles Stuart Baker
CatNo: 
426
Year: 
1932
Page No: 
390
Common name: 
Andersons Yellow Vented Bulbul
M_ID: 
21948
M_CN: 
Brown-breasted Bulbul
M_SN: 
Pycnonotus xanthorrhous
Volume: 
Vol. 1
id: 
13609

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