Wallcreeper (Tichodroma muraria, german: Mauerläufer, french: Tichodrome échelette). This bird was well camouflaged when it sat, but when opened, its wings were a bright red. (1079k)
Here are the pictures of Wallcreeper (Tichodroma muraria) with links to the pages on which they appear, links to the full sized picture, and the description of the picture with links to the entry in iNaturalist (inaturalist.org)
All pictures are © Dr. Günther Eichhorn, unless otherwise noted.
Mongolia Birds
Dr. Günther Eichhorn Travel Website
Soaring website