Genus DEMIEGRETTA

Genus DEMIEGRETTA.

Demiegretta Blyth, Jour. A. S. Beng.. xv, p. 372 (1846).

Type by mon., Demiegretta concolor = D. sacra Gmelin.

Demiegretta differs from Egretta in having the train composed of lanceolate feathers, shorter than the disintegrated plumes of that genus. The breast-plumes also are lanceolate and are worn all the year round and not in the breeding-season only; the nude portion of the tibia is less in extent.

In colour the Beef-Herons are dimorphic, being either all grey or all white, though intermediate piebald birds are common. The colour-phases are not yet understood. It does not seem to depend on sex or age, as many birds breed in all three phases of plumage, whilst in some cases a grey bird mates with a white, though generally the colours mate together. In one case certain young white birds moulted into grey plumage in the eighth month and there are specimens in the British Museum which seem to be in course of assuming a grey from a white plumage.

The genus is represented on the sea-coasts of Africa, Arabia, India, the islands of Southern Asia to Australia and the Pacific Islands. Two species are found in India.

Key to Species.

A. Crest of thick, rather hairy feathers; a white streak only on centre of throat in grey birds……………..B. sacra, p. 351.
B. Crest of two long feathers; whole chin and throat white in grey birds……………..B. asha, p. 353.

BookTitle: 
The Fauna Of British India, Including Ceylon And Burma-birds(second Edition)
Reference: 
Baker, EC S (1922–1930) The fauna of British India, including Ceylon and Burma. Second edition. vol.6 1929.
Title in Book: 
Genus DEMIEGRETTA
Book Author: 
Edward Charles Stuart Baker
Year: 
1929
Page No: 
351
M_ID: 
2326
M_SN: 
Egretta
Volume: 
Vol. 6
Term name: 
id: 
5193

Add new comment

CAPTCHA
This question is for testing whether or not you are a human visitor and to prevent automated spam submissions.
Image CAPTCHA
Enter the characters shown in the image.
Scratchpads developed and conceived by (alphabetical): Ed Baker, Katherine Bouton Alice Heaton Dimitris Koureas, Laurence Livermore, Dave Roberts, Simon Rycroft, Ben Scott, Vince Smith