13. Corvus splendens insolens

(13) Corvus splendens insolens Hume.
THE BURMESE HOUSE-CROW.
Corvus splendens insolens, Fauna B. I., Birds, 2nd ed. vol. i, p. 34.
The Burmese House-Crow breeds throughout Burma, principally in March and April, but some few birds breed again in July, possibly those who have had their first nests destroyed. So numerous are these Crows in the large towns of Burma such as Rangoon and Prome that they have to be officially slaughtered in immense numbers, these slaughters taking place at the height of the breeding season. Mr. J. M. D. Mackenzie, who took the opportunity of collecting magnificent series of selected clutches of their eggs during these shoots, writes the following notes for me, which summarize the nidification of this Crow well:—
“These Crows are exceedingly common in and about Prome town, indeed so common are they that vast numbers have to be destroyed annually to prevent their becoming a pest. The great majority of the nests of these birds are placed in the uppermost small branches of “Rain” trees and, in consequence, it is often impossible to collect the eggs, though it is easy enough to destroy nests, eggs and young with a charge of small shot. The nests are placed at any height from fifty to sixty feet from the ground, gener¬ally the former, and eggs may be taken any time during March and April and again sometimes during July. The full clutch is normally four, sometimes three or five, six but very rarely. The Koel swarms in Prome and the Crows get very badly victimized by them.
“They begin building operations early and many Crows were seen in Rangoon beginning to collect sticks and building material on the 10th of February, when a few unfinished nests were seen. On the 20th the birds were seen copulating and on the 25th we saw a nest with one egg. In Prome our first eggs, two fresh ones, were seen on the 27th March, but I saw young hatched on 9.4.16, when I saw also two or three nests with six eggs in them.”
Two hundred and eighty-seven eggs measured by Mackenzie average 36.4 x 26.1 : maxima 42.75 x 28.4 and 41.5 x 28.8 mm. ; minima 31.5 x 24.8 and 34.6 x 22.5 mm.
As already mentioned, the Burmese House-Crow's eggs only differ from those of the other races in being a trifle more richly and deeply coloured.

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: 
13. Corvus splendens insolens
Spp Author: 
Hume.
Book Author: 
Edward Charles Stuart Baker
CatNo: 
13
Year: 
1932
Page No: 
19
Common name: 
Burmese House Crow
M_ID: 
20521
M_SN: 
Corvus splendens insolens
Volume: 
Vol. 1
Term name: 
id: 
13238

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