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posted May 20th, 2011; last edited May 23rd, 2011 –– David Sibley

Distinguishing Interior West from Western Taiga White-crowned Sparrows

See my detailed discussion of White-crowned subspecies here, which needs updating with the information below.

In early May 2011 I spent several days in southeastern Arizona, and devoted a lot of time to studying the White-crowned Sparrows. At that date most of them were migrant Interior West birds of subspecies Z. l. oriantha. Most of [...]

May 20th, 2011 | 3 comments
posted November 12th, 2010; last edited January 27th, 2011 –– David Sibley

White-crowned Sparrow subspecies – Where?

There are five subspecies of White-crowned Sparrow, and in most parts of North America it is possible to see more than one subspecies during part of the year. Identification of subspecies is covered in the Sibley Guide to Birds and in Dunn et al. 1995. Maps of band recoveries (from the Canadian Atlas of Bird [...]

November 12th, 2010 | 2 comments