Genus PTYONOPROGNE

The genus Ptyonoprogne comprises the Crag-Martins, which are similar in appearance and structure to the Sand-Martins, but differ from them in some important points.

The Crag-Martins have a white spot on the inner web of all the tail-feathers except the middle and outermost pair; they construct mud-nests amongst rocks, in caves or old buildings, and they lay spotted eggs.

Key to the Species.

a, Chin and upper throat streaked or spotted.
a1. Wing 5; under tail-coverts much darker than abdomen……………………P. rupestris, p. 274.
b1. Wing little more than 4; under tail-coverts of same colour as abdomen……………………P. concolor, p. 275.
b. Chin and upper throat unmarked……………………P. obsoleta, p. 275.

BookTitle: 
The Fauna Of British India including Ceylon and Burma
Reference: 
OATES EW. The Fauna of British India, including Ceylon and Burma. Vol.2 1890.
Title in Book: 
Genus PTYONOPROGNE
Book Author: 
Eugene William Oates, Edited by William Thomas Blanford
Year: 
1890
Page No: 
273
M_ID: 
22540
M_SN: 
Ptyonoprogne
Volume: 
Vol. 2
Term name: 
id: 
1114

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Scratchpads developed and conceived by (alphabetical): Ed Baker, Katherine Bouton Alice Heaton Dimitris Koureas, Laurence Livermore, Dave Roberts, Simon Rycroft, Ben Scott, Vince Smith