fulvescent

This bat frequents old buildings, dark cellars, old ruins, &c.; the young are fulvescent, and become darker with age.

Natural History of the Mammalia of India and Ceylon Robert Armitage Sterndale 1870

-- Hair more or less brown above, sometimes with a chestnut hue, sometimes grizzled, or with a tinge of dun; yellowish-white, or with a fulvescent tinged white below; the throat, upper lip, and sides of head are nearly white; the line of separation of upper and lower parts not very distinctly marked.

Natural History of the Mammalia of India and Ceylon Robert Armitage Sterndale 1870

-- "Fur very full and dense, pale fulvescent olive brown on the upper parts, slightly yellowish-white below; whiskers remarkably long" (_Blyth_).

Natural History of the Mammalia of India and Ceylon Robert Armitage Sterndale 1870