Riparia riparia.

Riparia riparia.

Hirundo riparia Linn., Syst. Nat., 10th ed. i, p. 192 (1758). Type-locality: Sweden.

The typical form is darker than dilutee and subsoccata and paler than ijimae.

Key to Subspecies.

A. Paler, edgings to feathers of wing sandy-grey.
a. Larger; wing generally over 96 mm…………R. r. diluta, p. 232.
b. Smaller; wing generally under 96 mm…………R. r. subsoccata, p. 233
B. Darker, edgings to feathers whiter and more conspicuous…………R r. ijimae, p. 234

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.3 1926.
Title in Book: 
Riparia riparia.
Book Author: 
Edward Charles Stuart Baker
Year: 
1926
Page No: 
231
M_ID: 
22409
M_CN: 
Sand Martin
M_SN: 
Riparia riparia
Volume: 
Vol. 3
Term name: 
id: 
3979

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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